diff --git a/frameworks/config_policy/BUILD.gn b/frameworks/config_policy/BUILD.gn
index 5317390dac936550e1b89c397785b75432eb034b..91b2529c7f9a0e52fa8fc07186be4f9f5441eb10 100644
--- a/frameworks/config_policy/BUILD.gn
+++ b/frameworks/config_policy/BUILD.gn
@@ -17,6 +17,11 @@ if (defined(ohos_lite)) {
   import("//build/ohos.gni")
 }
 
+declare_args() {
+  # if fs has prefix before OH path, set it here
+  config_policy_fs_prefix = ""
+}
+
 config_policy_sources = [ "src/config_policy_utils.c" ]
 config("config_policy_config") {
   include_dirs = [
@@ -26,9 +31,20 @@ config("config_policy_config") {
   ]
 }
 
-if (defined(ohos_lite)) {
+if (defined(ohos_lite) && ohos_kernel_type == "liteos_m") {
+  static_library("configpolicy_util") {
+    sources = config_policy_sources
+    if (config_policy_fs_prefix != "") {
+      print("cust config_policy_fs_prefix: ${config_policy_fs_prefix}")
+      defines = [ "ROOT_PREFIX=\"${config_policy_fs_prefix}\"" ]
+    }
+    include_dirs = [
+      "//base/customization/config_policy/interfaces/inner_api/include",
+      "//third_party/bounds_checking_function/include",
+    ]
+  }
+} else if (defined(ohos_lite)) {
   shared_library("configpolicy_util") {
-    defines = [ "OHOS_LITE" ]
     sources = config_policy_sources
     public_configs = [ ":config_policy_config" ]
     deps = [ "//third_party/bounds_checking_function:libsec_shared" ]
diff --git a/frameworks/config_policy/src/config_policy_utils.c b/frameworks/config_policy/src/config_policy_utils.c
index 92b7c45def4ae039cc739187989b126e7d99bdf7..eb3539a525b305e018f5b344e17de1761a7fbfb3 100644
--- a/frameworks/config_policy/src/config_policy_utils.c
+++ b/frameworks/config_policy/src/config_policy_utils.c
@@ -21,7 +21,7 @@
 #include <unistd.h>
 
 #include "config_policy_impl.h"
-#ifndef OHOS_LITE
+#ifndef __LITEOS__
 #include "init_param.h"
 #endif
 
@@ -46,6 +46,23 @@ typedef struct {
     char *segs[1];
 } SplitedStr;
 
+#ifdef __LITEOS_M__
+// The data will be used always, so prealloc to avoid memory fragment
+static char gConfigPolicy[MINI_CONFIG_POLICY_BUF_SIZE] = {0};
+void SetMiniConfigPolicy(const char *policy)
+{
+    if (gConfigPolicy[0] != 0) {
+        return; // now only set once
+    }
+    (void)strcpy_s(gConfigPolicy, sizeof(gConfigPolicy), policy);
+}
+
+__WEAK void TrigSetMiniConfigPolicy()
+{
+    return;
+}
+#endif
+
 /**
  * query function, the memory is allocated in function
  * @return value, or NULL if not exist or strlen(value) is 0
@@ -71,6 +88,7 @@ static void FreeIf(void *p)
     }
 }
 
+#ifndef __LITEOS__
 static char *CustGetSystemParam(const char *name)
 {
     char *value = NULL;
@@ -119,6 +137,7 @@ static char *GetOpkeyPath(int type)
     FreeIf(result);
     return NULL;
 }
+#endif // __LITEOS__
 
 static SplitedStr *SplitStr(char *str, char delim)
 {
@@ -151,6 +170,7 @@ static void FreeSplitedStr(SplitedStr *p)
     }
 }
 
+#ifndef __LITEOS__
 // get follow x rule from param variant
 // *mode: read from contains param variant, mode is output param.
 // return: extra path rule.
@@ -237,6 +257,12 @@ static SplitedStr *GetFollowXPathByMode(const char *relPath, int followMode, con
     SplitedStr *result = expandVal ? SplitStr(expandVal, ',') : NULL;
     return result;
 }
+#else
+static SplitedStr *GetFollowXPathByMode(const char *relPath, int followMode, const char *extra)
+{
+    return NULL;
+}
+#endif
 
 static char *TrimInplace(char *str, bool moveToStart)
 {
@@ -344,13 +370,22 @@ static void GetCfgDirRealPolicyValue(CfgDir *res)
     if (res == NULL) {
         return;
     }
-#ifndef OHOS_LITE
+#ifdef __LITEOS_M__
+    if (gConfigPolicy[0] == '\0') {
+        TrigSetMiniConfigPolicy();
+    }
+    if (gConfigPolicy[0] != '\0') {
+        res->realPolicyValue = strdup(gConfigPolicy);
+    }
+#elif defined(__LITEOS__)
+    // use default, now do nothing
+#else
     res->realPolicyValue = CustGetSystemParam(CUST_KEY_POLICY_LAYER);
-    if (res->realPolicyValue != NULL) {
+#endif
+    if (res->realPolicyValue != NULL && res->realPolicyValue[0]) {
         return;
     }
-#endif
-    res->realPolicyValue = strdup("/system:/chipset:/sys_prod:/chip_prod");
+    res->realPolicyValue = strdup(DEFAULT_LAYER);
 }
 
 void FreeCfgFiles(CfgFiles *res)
diff --git a/interfaces/inner_api/include/config_policy_impl.h b/interfaces/inner_api/include/config_policy_impl.h
index b13d4a98c343f9fd021c039fdfcb94a6299bee07..8a0d98acc8e400ec19d1f1a544df322ea4f19c6c 100644
--- a/interfaces/inner_api/include/config_policy_impl.h
+++ b/interfaces/inner_api/include/config_policy_impl.h
@@ -30,6 +30,19 @@ extern "C" {
 // opkey info for sim1
 #define CUST_OPKEY1           "telephony.sim.opkey1"
 
+// if fs need path prefix, set ROOT_PREFIX before include current file
+#ifndef ROOT_PREFIX
+#define ROOT_PREFIX ""
+#endif
+#define DEFAULT_LAYER ROOT_PREFIX"/system:"ROOT_PREFIX"/chipset:"ROOT_PREFIX"/sys_prod:"ROOT_PREFIX"/chip_prod"
+
+#ifdef __LITEOS_M__
+#define MINI_CONFIG_POLICY_BUF_SIZE 256
+// for mini system, if exceed max size will not set
+void SetMiniConfigPolicy(const char *policy);
+__WEAK void TrigSetMiniConfigPolicy();
+#endif
+
 #ifdef __cplusplus
 #if __cplusplus
 }