diff --git a/README.md b/README.md
index 04c0bfd01d8d86836fe303ebd79a82fc935c9271..7bf376104fbad99ecec8e68dfe3cca3f9b3f2103 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@ Including a power API SO and the Power API Service.
 #### 使用说明
 
 1. 编译：./build.sh
-2. 后台运行PowerAPI Service： ./release/pwrapis/pwrapis &
+2. 后台运行PowerAPI Service： ./release/pwrapis/pwrapis pwrapis/conf/pwrapis_config.ini &
 3. 运行PowerAPI demo： ./release/pwrapi_demo/pwrapic_demo
 
 #### 参与贡献
diff --git a/common/inc/pwrerr.h b/common/inc/pwrerr.h
index 2bf6094b692d2723a3c0a4ec525a88bf1d435ae7..60737f519204c54fc716170f403723b78a7adac5 100644
--- a/common/inc/pwrerr.h
+++ b/common/inc/pwrerr.h
@@ -31,6 +31,7 @@ enum RtnCode {
     ERR_GOVERNOR_INVALIDE,
     ERR_FREQ_NOT_IN_RANGE,
     ERR_CALLBACK_FUNCTION_SHOULD_BE_SET_FIRST,
+    ERR_MODIFY_BAN_UPDATE_ATTR_CURRENTLY,
     ERR_NOT_REGISTED = 100,
     ERR_NOT_AUTHED,
     ERR_OVER_MAX_CONNECTION,
diff --git a/common/inc/pwrmsg.h b/common/inc/pwrmsg.h
index e6ebdd7f4b1c2080722afa48969899efe96f1d55..09842acd9a3e5f102963066044034f76516c8c54 100644
--- a/common/inc/pwrmsg.h
+++ b/common/inc/pwrmsg.h
@@ -36,7 +36,7 @@ typedef struct MsgHead {
     uint32_t taskNo;
     uint32_t crcMagic;
     uint32_t dataLen;
-    uint32_t sysId; // 消息源头的系统标识，IPC场景使用PID
+    uint32_t sysId; // System id of msg source, using PID for IPC scene.
     char reserved[4];
 } MsgHead;
 
diff --git a/pwrapic/gtest/Common.cpp b/pwrapic/gtest/Common.cpp
index b8932c830dd95af012156680420f2c4cd3869b45..3c73cf618c2e40f81f542b3d874f9f3409222c96 100644
--- a/pwrapic/gtest/Common.cpp
+++ b/pwrapic/gtest/Common.cpp
@@ -29,7 +29,7 @@ int StartService(void)
 
     std::string gtestDir = dir;
     std::string pwrapisDir;
-    // 10: length for "gtest_test", 只保留文件的路径
+    // 10: length for "gtest_test", keep only the path of file
     gtestDir = gtestDir.substr(0, gtestDir.length() - 10);
     pwrapisDir = gtestDir + "../pwrapis/pwrapis &";
     ret = system(pwrapisDir.c_str());
diff --git a/pwrapic/src/sockclient.c b/pwrapic/src/sockclient.c
index c866d80a6c8ed18a353ff08c3009b43f700ed17a..2eac79c48833b1373a24124eb055a7a7e285b583 100644
--- a/pwrapic/src/sockclient.c
+++ b/pwrapic/src/sockclient.c
@@ -40,10 +40,10 @@
 static int g_sockFd = INVALID_FD;
 static ThreadInfo g_sockThread;
 
-static PwrMsgBuffer g_sendBuff;         // 发送队列
-static PwrMsgBuffer g_recvBuff;         // 接收队列
-static ResultWaitingMsgList g_waitList; // 等待结果列表
-static char SERVER_ADDR[MAX_PATH_LEN] = "/etc/sysconfig/pwrapis/pwrserver.sock"; // 默认server路径
+static PwrMsgBuffer g_sendBuff;         // Send queue
+static PwrMsgBuffer g_recvBuff;         // Receive queue
+static ResultWaitingMsgList g_waitList; // Waiting for results list
+static char SERVER_ADDR[MAX_PATH_LEN] = "/etc/sysconfig/pwrapis/pwrserver.sock"; // Default server path
 
 #define CHECK_SOCKET_STATUS()                         \
     if (g_sockFd == INVALID_FD) {                     \
diff --git a/pwrapis/inc/config.h b/pwrapis/inc/config.h
index 5b475e482a545bf3c10355dd275725ffee28e378..5f079a6d91a854eaf8a1b1b3b48f7e02490c49e5 100644
--- a/pwrapis/inc/config.h
+++ b/pwrapis/inc/config.h
@@ -25,6 +25,7 @@
 #define DEFAULT_FILE_SIZE 10 // MB
 #define DEFAULT_FILE_NUM 3
 #define MAX_SERVER_PORT 65535
+#define MD5_LEN 33
 
 // LogCfg
 enum LogLevel {
diff --git a/pwrapis/inc/utils.h b/pwrapis/inc/utils.h
index 9bf915ca30ec4cfb5c0ee5a3655a8ba6a0191c0c..ae14eaf896f37ed4d32b592635eb446dc5033889 100644
--- a/pwrapis/inc/utils.h
+++ b/pwrapis/inc/utils.h
@@ -238,5 +238,6 @@ int InIntRange(int *range, int len, int a);
 int ReadFile(const char *strInfo, char *buf, int bufLen);
 int WriteFile(const char *strInfo, char *buf, int bufLen);
 int WriteFileAndCheck(const char *strInfo, char *buf, int bufLen);
+int GetMd5(const char *filename, char *md5);
 
 #endif
diff --git a/pwrapis/src/CMakeLists.txt b/pwrapis/src/CMakeLists.txt
index a4dca8e6ece341242cddda0b773f6d77dddd8dcd..9b7f0a3f8c96e4b29c1bdb08c540d0751b890a6e 100644
--- a/pwrapis/src/CMakeLists.txt
+++ b/pwrapis/src/CMakeLists.txt
@@ -23,7 +23,7 @@ set ( CMAKE_INSTALL_PREFIX "/usr" CACHE PATH "Install path prefix" FORCE)
 install (TARGETS ${PG_NAME} DESTINATION sbin)
 
 # Install default config files
-install (FILES "${PROJECT_SOURCE_DIR}/../conf/pwrapis_config.ini" DESTINATION /etc/sysconfig)
+install (FILES "${PROJECT_SOURCE_DIR}/../conf/pwrapis_config.ini" DESTINATION /etc/sysconfig/pwrapis)
 install (FILES "${PROJECT_SOURCE_DIR}/../pwrapis.service" DESTINATION /usr/lib/systemd/system)
 
 # release complile mode
diff --git a/pwrapis/src/comservice.c b/pwrapis/src/comservice.c
index c9f583ed3f4ed1bea85d87e209c9edc89d2abff2..70aec82a4684ff82186a6d3960c1fb4e215cb4da 100644
--- a/pwrapis/src/comservice.c
+++ b/pwrapis/src/comservice.c
@@ -27,7 +27,7 @@ static uint32_t g_authOwner = 0;
 static int DoAuthRequest(uint32_t client)
 {
     if (g_authed) {
-        if (g_authOwner != client) { // 控制权已授予其他应用
+        if (g_authOwner != client) { // Control has been granted to other app
             return ERR_CONTROL_AUTH_REQUESTED;
         }
         return SUCCESS;
diff --git a/pwrapis/src/config.c b/pwrapis/src/config.c
index c7707c876d8ca78f9d45da97823a4c93f8cafbd0..fb0b98570df73b916dd4e00de15d2b57bba5d222 100644
--- a/pwrapis/src/config.c
+++ b/pwrapis/src/config.c
@@ -18,6 +18,7 @@
 #include <unistd.h>
 #include "string.h"
 #include "pwrerr.h"
+#include "pwrdata.h"
 #include "log.h"
 #include "utils.h"
 
@@ -34,6 +35,7 @@ inline ServCfg *GetServCfg(void)
 }
 
 static char g_configPath[MAX_PATH_NAME] = "/etc/sysconfig/pwrapis/pwrapis_config.ini";
+static char g_lastMd5[MD5_LEN] = {0};
 
 int UpdateConfigPath(const char* configPath)
 {
@@ -188,11 +190,11 @@ static int LoadConfigFile(void)
         return ERR_NULL_POINTER;
     }
     while (fgets(line, sizeof(line) - 1, fp) != NULL) {
-        // 空行、注释行等跳过
+        // Skip invalid lines such as empty lines、comment lines
         if (strlen(line) <= 1 || line[0] == '#' || line[0] == '[') {
             continue;
         }
-        // 解析当前行内容，提取（关键字，值），暂时默认配置文件中的key和value的格式为：key=value，不存在空格情况
+        // Parse the current line content, extract (key, value)
         char key[MAX_KEY_LEN] = {0};
         char value[MAX_LINE_LENGTH] = {0};
         char *index = strchr(line, '=');
@@ -205,7 +207,7 @@ static int LoadConfigFile(void)
         LRtrim(key);
         LRtrim(value);
         if (strlen(key) == 0 || strlen(value) == 0) {
-            // key or value is invalid
+            // Key or value is invalid
             continue;
         }
         enum CnfItemType type = StringToEnum(key);
@@ -233,6 +235,14 @@ static int LoadConfigFile(void)
 
 int InitConfig(void)
 {
+    // Get initial md5 of config
+    bzero(g_lastMd5, sizeof(g_lastMd5));
+    GetMd5(g_configPath, g_lastMd5);
+    if (strlen(g_lastMd5) == 0) {
+        Logger(ERROR, MD_NM_CFG, "Get initial md5 of config failed");
+        return FAILED;
+    }
+
     int ret = SUCCESS;
     // Init by default values
     ret = InitLogCfg();
@@ -250,15 +260,154 @@ int InitConfig(void)
     // load config file
     ret = LoadConfigFile();
     if (ret != SUCCESS) {
-        Logger(ERROR, MD_NM_CFG, "config file error. ret:%d", ret);
+        Logger(ERROR, MD_NM_CFG, "Handle config file failed. ret:%d", ret);
         return ret;
     }
     return SUCCESS;
 }
 
+static int HandleInvalidUpdate(char *key, char *value)
+{
+    enum CnfItemType type = StringToEnum(key);
+    switch (type) {
+        case E_CFG_IT_LGP:
+            if (strcmp(value, g_logCfg.logPath) != 0) {
+                Logger(ERROR, MD_NM_CFG, "%s cannot be dynamically configured to take effect", key);
+                return ERR_COMMON;
+            }
+            break;
+        case E_CFG_IT_BKP:
+            if (strcmp(value, g_logCfg.logBkp) != 0) {
+                Logger(ERROR, MD_NM_CFG, "%s cannot be dynamically configured to take effect", key);
+                return ERR_COMMON;
+            }
+            break;
+        case E_CFG_IT_PFX:
+            if (strcmp(value, g_logCfg.logPfx) != 0) {
+                Logger(ERROR, MD_NM_CFG, "%s cannot be dynamically configured to take effect", key);
+                return ERR_COMMON;
+            }
+            break;
+        case E_CFG_IT_SKF:
+            if (strcmp(value, g_servCfg.sockFile) != 0) {
+                Logger(ERROR, MD_NM_CFG, "%s cannot be dynamically configured to take effect", key);
+                return ERR_COMMON;
+            }
+            break;
+    }
+    return SUCCESS;
+}
+
+int UpdateConfig(char *key, char *value)
+{
+    enum CnfItemType type = StringToEnum(key);
+    int actualValue;
+    switch (type) {
+        // Properties that can be dynamically validated
+        case E_CFG_IT_FLS:
+            actualValue = atoi(value);
+            if (!IsNumStr(value) || actualValue < 0) {
+                int curFileSize = (g_logCfg.maxFileSize + MAX_LINE_LENGTH) / UNIT_FACTOR;
+                Logger(ERROR, MD_NM_CFG, "File_size in config is invalid, current valid value is %d", curFileSize);
+                return ERR_INVALIDE_PARAM;
+            }
+            int maxFileSize = actualValue * UNIT_FACTOR - MAX_LINE_LENGTH;
+            if (maxFileSize != g_logCfg.maxFileSize) {
+                g_logCfg.maxFileSize = maxFileSize;
+                Logger(INFO, MD_NM_CFG, "File_size in config has been modified to %d", actualValue);
+            }
+            break;
+        case E_CFG_IT_CNT:
+            actualValue = atoi(value);
+            if (!IsNumStr(value) || actualValue < 0) {
+                Logger(ERROR, MD_NM_CFG, "Cmp_cnt in config is invalid, current valid value is %d", g_logCfg.maxCmpCnt);
+                return ERR_INVALIDE_PARAM;
+            }
+            if (actualValue != g_logCfg.maxCmpCnt) {
+                g_logCfg.maxCmpCnt = actualValue;
+                Logger(INFO, MD_NM_CFG, "Cmp_cnt in config has been modified to %d", actualValue);
+            }
+            break;
+        case E_CFG_IT_LGV:
+            actualValue = atoi(value);
+            if (!IsNumStr(value) || actualValue < 0) {
+                enum LogLevel curLogLevel = g_logCfg.logLevel;
+                Logger(ERROR, MD_NM_CFG, "Log_level in config is invalid, current valid value is %d", curLogLevel);
+                return ERR_INVALIDE_PARAM;
+            }
+            if (actualValue != g_logCfg.logLevel) {
+                UpdateLogLevel(actualValue);
+                Logger(INFO, MD_NM_CFG, "Log_level in config has been modified to %d", actualValue);
+            }
+            break;
+        // Properties that cannot be dynamically validated
+        default:
+            return HandleInvalidUpdate(key, value);
+    }
+    return SUCCESS;
+}
+
 int CheckAndUpdateConfig(void)
 {
-    // todo 检查配置文件是否有更新，有更新则更新系统配置项
+    char curMd5[MD5_LEN] = {0};
+    GetMd5(g_configPath, curMd5);
+    if (strlen(curMd5) == 0 || strcmp(curMd5, g_lastMd5) == 0) {
+        return SUCCESS;
+    }
+
+    int invalidUpdateSum = 0;   // The number of invalid updates
+    int nonDynamicSum = 0;      // The number of undynamically validated attrs that been modified
+    char line[MAX_LINE_LENGTH];
+    FILE *fp = fopen(g_configPath, "r");
+    if (fp == NULL) {
+        return ERR_NULL_POINTER;
+    }
+
+    while (fgets(line, sizeof(line) - 1, fp) != NULL) {
+        if (strlen(line) <= 1 || line[0] == '#' || line[0] == '[') {
+            continue;
+        }
+        char key[MAX_KEY_LEN] = {0};
+        char value[MAX_LINE_LENGTH] = {0};
+        char *index = strchr(line, '=');
+        if (index == NULL) {
+            continue;
+        }
+        
+        strncpy(key, line, index - line);
+        strncpy(value, index + 1, sizeof(value));
+        LRtrim(key);
+        LRtrim(value);
+        if (strlen(key) == 0 || strlen(value) == 0) {
+            // key or value is invalid
+            continue;
+        }
+        switch (UpdateConfig(key, value)) {
+            case ERR_INVALIDE_PARAM:
+                invalidUpdateSum++;
+                break;
+            case ERR_COMMON:
+                nonDynamicSum++;
+                break;
+        }
+    }
+    pclose(fp);
+    strncpy(g_lastMd5, curMd5, sizeof(g_lastMd5));
+    /**
+     * The file has been confirmed to be modified now.
+     * 1. Error modifying attrs, return ERR_INVALIDE_PARAM;
+     * 2. Undynamically validated attrs have been modified, return ERR_MODIFY_BAN_UPDATE_ATTR_CURRENTLY;
+     * 3. Return SUCCESS.
+     */
+    if (invalidUpdateSum != 0) {
+        return ERR_INVALIDE_PARAM;
+    } else {
+        if (nonDynamicSum != 0) {
+            return ERR_MODIFY_BAN_UPDATE_ATTR_CURRENTLY;
+        } else {
+            return SUCCESS;
+        }
+    }
 }
 
 int GetLogLevel(void)
diff --git a/pwrapis/src/cpuservice.c b/pwrapis/src/cpuservice.c
index e4b2b6d6bc83dc8346f493e0c92f3a1fa0d3fd82..937f0c2386d59b4048ef758630e5771f45663ba8 100644
--- a/pwrapis/src/cpuservice.c
+++ b/pwrapis/src/cpuservice.c
@@ -893,7 +893,7 @@ void SetCpuFreqRange(PwrMsg *req)
     SendRspToClient(req, rspCode, NULL, 0);
 }
 
-// 总CPU核数
+// Total CPU cores
 int GetCpuCoreNumber(void)
 {
     return sysconf(_SC_NPROCESSORS_CONF);
diff --git a/pwrapis/src/server.c b/pwrapis/src/server.c
index c47d7c7a7a81b1c484de45f0dbc23ff0a314d6e2..88f4741b6eec8b46160e5400de5faba51bfd38b1 100644
--- a/pwrapis/src/server.c
+++ b/pwrapis/src/server.c
@@ -40,9 +40,9 @@ static pthread_mutex_t g_listenFdLock = PTHREAD_MUTEX_INITIALIZER;
 static ThreadInfo g_sockProcThread;
 static ThreadInfo g_serviceThread;
 
-static PwrClient g_pwrClients[MAX_CLIENT_NUM]; // 对该结构的读和写都在一个线程完成，因而不需要加锁
-static PwrMsgBuffer g_sendBuff;                // 发送队列
-static PwrMsgBuffer g_recvBuff;                // 接收队列
+static PwrClient g_pwrClients[MAX_CLIENT_NUM]; // Reading and writing the struct are done in one thread, no need locks
+static PwrMsgBuffer g_sendBuff;                // Send queue
+static PwrMsgBuffer g_recvBuff;                // Receive queue
 static pthread_mutex_t g_waitMsgMutex;
 static pthread_cond_t g_waitMsgCond;
 
@@ -169,7 +169,7 @@ static int ReadMsg(void *pData, int len, int dstFd, int idx)
 
 static void ProcessRecvMsgFromClient(int clientIdx)
 {
-    // 从connFd获取消息，并送到service队列，等待处理
+    // Get msg from connFd, send to service queue and waiting for processing
     int dstFd = g_pwrClients[clientIdx].fd;
     PwrMsg *msg = (PwrMsg *)malloc(sizeof(PwrMsg));
     if (!msg || ReadMsg(msg, sizeof(PwrMsg), dstFd, clientIdx) != SUCCESS) {
@@ -232,7 +232,7 @@ static int WriteMsg(const void *pData, int len, int dstFd)
 
 static void ProcessSendMsgToClient(void)
 {
-    // 从缓存中读取待发送消息，并发送出去
+    // Read msg from buffer and send.
     int count = 0;
     static char data[MAX_DATA_SIZE];
     while (!IsEmptyBuffer(&g_sendBuff) && count < COUNT_MAX) {
@@ -458,7 +458,7 @@ void StopServer(void)
     pthread_mutex_destroy((pthread_mutex_t *)&g_waitMsgMutex);
 }
 
-// 本函数会将data指针所指向数据迁移走，调用方勿对data进行释放操作。
+// This function will move the 'data' pointer to data migration, and the caller should not release the 'data'.
 void SendRspToClient(const PwrMsg *req, int rspCode, char *data, uint32_t len)
 {
     if (!req) {
@@ -480,7 +480,7 @@ void SendRspToClient(const PwrMsg *req, int rspCode, char *data, uint32_t len)
         ReleasePwrMsg(&rsp);
     }
 }
-// 本函数会将data指针所指向数据迁移走，调用方勿对data进行释放操作。
+// This function will move the 'data' pointer to data migration, and the caller should not release the 'data'.
 int SendMetadataToClient(uint32_t sysId, char *data, uint32_t len)
 {
     if (!data && len != 0) {
diff --git a/pwrapis/src/taskservice.c b/pwrapis/src/taskservice.c
index aa88aa292ce99cc01cd81612f1128d4b25e510e2..3ab111a12d3aeff862ff860291975c0fec6a64b8 100644
--- a/pwrapis/src/taskservice.c
+++ b/pwrapis/src/taskservice.c
@@ -39,8 +39,8 @@ typedef struct CollDataSubscriber {
 typedef struct CollTask {
     PWR_COM_COL_DATATYPE dataType;
     int interval;
-    int subNum;                                        // 订阅数
-    CollDataSubscriber subscriberList[MAX_CLIENT_NUM]; // 该数据订阅方
+    int subNum;                                        // Number of subscriptions
+    CollDataSubscriber subscriberList[MAX_CLIENT_NUM]; // The data subscriber
     ThreadInfo collThread;
 } CollTask;
 
@@ -74,13 +74,17 @@ static int FindAvailebleTaskSlot(void)
 
 static inline void FiniTask(int index)
 {
-    FiniThreadInfo(&(g_collTaskList[index]->collThread)); // 必须先停止线程
+    FiniThreadInfo(&(g_collTaskList[index]->collThread)); // Must stop thread first
     free(g_collTaskList[index]);
     g_collTaskList[index] = NULL;
     g_taskNum--;
 }
 
-// 需要使用指定的订阅者周期更新task周期时，subIdx填具体订阅者的索引，否则填INVALIDE_INDEX
+/**
+ * When the task cycle needs to be updated using the specified subscriber cycle,
+ * subIdx should fill in the index of the specific subscriber,
+ * otherwise fill in INVALIDE_ INDEX
+ */
 static void UpdataTaskInterval(int index, int subIdx)
 {
     if (subIdx != INVALID_INDEX) {
@@ -151,7 +155,7 @@ static int DeleteSubscriber(int index, uint32_t subscriber)
         }
     }
 
-    if (g_collTaskList[index]->subNum <= 0) { // 无用户订阅数据时，停止采集
+    if (g_collTaskList[index]->subNum <= 0) { // Stop collecting data when there is no user subscription
         FiniTask(index);
     } else {
         UpdataTaskInterval(index, INVALID_INDEX);
@@ -169,7 +173,7 @@ static void SendMetadataToSubscribers(CollTask *task, const char *data, int len,
                 continue;
             }
             memcpy(dataCpy, data, len);
-            SendMetadataToClient(task->subscriberList[i].sysId, dataCpy, len); // 该函数内部会释放dataCpy
+            SendMetadataToClient(task->subscriberList[i].sysId, dataCpy, len); // Internally release 'dataCpy'
             task->subscriberList[i].lastSent = *startTime;
         }
     }
@@ -245,7 +249,7 @@ static void *RunDcTaskProcess(void *arg)
     int sleepTime = 0;
     while (task->collThread.keepRunning) {
         gettimeofday(&after, NULL);
-        sleepTime = task->interval - GetTimeDistance(after, before); // 任务周期 - 上次执行花费时间
+        sleepTime = task->interval - GetTimeDistance(after, before); // Task cycle - Last execution took time
         if (sleepTime > 0) {
             usleep(THOUSAND * sleepTime);
         }
diff --git a/pwrapis/src/utils.c b/pwrapis/src/utils.c
index 30e388c72724d2fc34a68b9fe3dc805b7eed1f97..b0333a6c65a3ce3931d2e44328059d8fcc1333d7 100644
--- a/pwrapis/src/utils.c
+++ b/pwrapis/src/utils.c
@@ -976,4 +976,27 @@ int WriteFileAndCheck(const char *strInfo, char *buf, int bufLen)
         return 1;
     }
     return 0;
+}
+
+int GetMd5(const char *filename, char *md5)
+{
+    char md5Cmd[MAX_NAME_LEN];
+    const char s1[] = "md5sum ";
+    const char s2[] = " | awk '{print $1}'";
+    StrCopy(md5Cmd, s1, MAX_NAME_LEN);
+    strncat(md5Cmd, filename, strlen(filename));
+    strncat(md5Cmd, s2, strlen(s2));
+    FILE *fp = popen(md5Cmd, "r");
+    if (fp == NULL) {
+        pclose(fp);
+        return ERR_NULL_POINTER;
+    }
+    char buf[MD5_LEN] = {0};
+    if (fgets(buf, sizeof(buf), fp) == NULL) {
+        pclose(fp);
+        return ERR_COMMON;
+    }
+    strncpy(md5, buf, sizeof(buf));
+    pclose(fp);
+    return SUCCESS;
 }
\ No newline at end of file
diff --git a/uninstall.sh b/uninstall.sh
index b258002ef47a4c7d7496027bc1077f47f5262bfc..29ab1d397bb997bcaddf5278d156c6e79384b054 100644
--- a/uninstall.sh
+++ b/uninstall.sh
@@ -9,6 +9,6 @@ if [ -f "./build/install_manifest.txt" ];then
     else
     rm /usr/lib/libpwrapi.so
     rm /usr/sbin/pwrapis
-    rm /etc/sysconfig/pwrapis_config.ini
+    rm /etc/sysconfig/pwrapis/pwrapis_config.ini
     rm /usr/lib/systemd/system/pwrapis.service
 fi