diff --git a/include/syscap_tool.h b/include/syscap_tool.h
index 8ec1899ac0d42cb2acda526296f77a29f3e0d683..d485c9bf085cdf120322a52ebadd506aa436fcce 100644
--- a/include/syscap_tool.h
+++ b/include/syscap_tool.h
@@ -16,7 +16,7 @@
 #ifndef _SYSCAP_TOOL_H
 #define _SYSCAP_TOOL_H
 
-#include "stdint.h"
+#include <stdint.h>
 
 #define TYPE_FILE (0U)
 #define TYPE_STRING (1U)
diff --git a/interfaces/inner_api/syscap_interface.c b/interfaces/inner_api/syscap_interface.c
index a42a7a5965ff8f02a8602da85572157527f4c634..14082ca3537829bbcfa0be1c4b6c8bf062616c98 100644
--- a/interfaces/inner_api/syscap_interface.c
+++ b/interfaces/inner_api/syscap_interface.c
@@ -13,10 +13,8 @@
  * limitations under the License.
  */
 
+#include <errno.h>
 #include <stdlib.h>
-#include <stdbool.h>
-#include <stdint.h>
-#include <securec.h>
 #include <stdio.h>
 #include <string.h>
 #include <sys/stat.h>
diff --git a/napi/napi_query_syscap.cpp b/napi/napi_query_syscap.cpp
index 09dc080241a6d1370efa7c3bac5ef3eba36d2ed4..5cbb3d9f0aefbc0ac19fe73b6c3fa7691c3676bd 100644
--- a/napi/napi_query_syscap.cpp
+++ b/napi/napi_query_syscap.cpp
@@ -13,11 +13,10 @@
  * limitations under the License.
  */
 
+#include <cstdint>
 #include <cstring>
-#include <unistd.h>
+#include <cstdlib>
 #include <securec.h>
-#include <cstdint>
-#include "hilog/log.h"
 #include "napi/native_api.h"
 #include "napi/native_node_api.h"
 #include "syscap_interface.h"
diff --git a/src/create_pcid.c b/src/create_pcid.c
index 8710a952b7a6e35ae8589625f4fab03591dbe05a..7926f933d6d1b4a5c5ef2f5ad2b11f285ea55868 100644
--- a/src/create_pcid.c
+++ b/src/create_pcid.c
@@ -17,12 +17,8 @@
 #include <stdint.h>
 #include <stdlib.h>
 #include <errno.h>
-#include <unistd.h>
 #include <string.h>
 #include <limits.h>
-#include <libgen.h>
-#include <getopt.h>
-#include <sys/types.h>
 #include <sys/stat.h>
 #include "securec.h"
 #include "cJSON.h"
diff --git a/src/endian_internal.c b/src/endian_internal.c
index fc7301aeb388f0e820fcd97ab18aa714e063de99..5da4f705b27539ec6f7df64c36df1137cb45f0eb 100644
--- a/src/endian_internal.c
+++ b/src/endian_internal.c
@@ -14,7 +14,6 @@
  */
 
 #include "endian_internal.h"
-#include <stdint.h>
 
 #define B_L_SWAP16(A)  ((((uint16_t)(A) & 0xff00) >> 8) | (((uint16_t)(A) & 0x00ff) << 8))
 #define B_L_SWAP32(A)  ((((uint32_t)(A) & 0xff000000) >> 24) | (((uint32_t)(A) & 0x00ff0000) >> 8) | \
diff --git a/src/syscap_tool.c b/src/syscap_tool.c
index fdfceb22d8799485d53eeca84bcd5981e0f501d9..8f28bba68b3ba687f6d880a4a4e310dca8df97c5 100644
--- a/src/syscap_tool.c
+++ b/src/syscap_tool.c
@@ -14,15 +14,11 @@
  */
 
 #include <stdio.h>
-#include <stdint.h>
 #include <stdbool.h>
 #include <stdlib.h>
 #include <errno.h>
-#include <unistd.h>
 #include <string.h>
 #include <limits.h>
-#include <libgen.h>
-#include <sys/types.h>
 #include <sys/stat.h>
 #include "securec.h"
 #include "endian_internal.h"
diff --git a/test/unittest/common/include/syscap_codec_test.h b/test/unittest/common/include/syscap_codec_test.h
index 6c53be637af281f90088abb548f6890076019d40..2410fa188c87f9500ed56dc7bd416b004b617ade 100644
--- a/test/unittest/common/include/syscap_codec_test.h
+++ b/test/unittest/common/include/syscap_codec_test.h
@@ -16,8 +16,6 @@
 #ifndef _SYSCAP_CODEC_TEST_H
 #define _SYSCAP_CODEC_TEST_H
 
-#include <gtest/gtest.h>
-
 #ifdef __cplusplus
 #if __cplusplus
 extern "C" {
diff --git a/test/unittest/common/syscap_codec_test.cpp b/test/unittest/common/syscap_codec_test.cpp
index be73036c9860d39c29334a6158ea64ea1ebb18ef..23df011358bef270f0b31b115134874b5986adce 100644
--- a/test/unittest/common/syscap_codec_test.cpp
+++ b/test/unittest/common/syscap_codec_test.cpp
@@ -13,7 +13,8 @@
  * limitations under the License.
  */
 
-#include <cstddef>
+#include <gtest/gtest.h>
+#include <cstdlib>
 #include "syscap_interface.h"
 #include "syscap_codec_test.h"
 
@@ -45,7 +46,7 @@ HWTEST_F(SyscapCodecTest, EncodeOsSyscap, TestSize.Level1)
  */
 HWTEST_F(SyscapCodecTest, EncodePrivateSyscap, TestSize.Level1)
 {
-    char *charPriInput = NULL;
+    char *charPriInput = nullptr;
     int priOutLen;
     EXPECT_TRUE(EncodePrivateSyscap(&charPriInput, &priOutLen));
     free(charPriInput);
@@ -59,7 +60,7 @@ HWTEST_F(SyscapCodecTest, EncodePrivateSyscap, TestSize.Level1)
 HWTEST_F(SyscapCodecTest, DecodeOsSyscap, TestSize.Level1)
 {
     int osSyscap[32] = {1, 3, 3};
-    char (*osOutput)[SINGLE_SYSCAP_LEN] = NULL;
+    char (*osOutput)[SINGLE_SYSCAP_LEN] = nullptr;
     int decodeOsCnt;
     char expectOsOutput001[] = "SystemCapability.Account.AppAccount";
     char expectOsOutput002[] = "SystemCapability.Account.OsAccount";
@@ -78,7 +79,7 @@ HWTEST_F(SyscapCodecTest, DecodeOsSyscap, TestSize.Level1)
  */
 HWTEST_F(SyscapCodecTest, DecodePrivateSyscap, TestSize.Level1)
 {
-    char (*priOutput)[SINGLE_SYSCAP_LEN] = NULL;
+    char (*priOutput)[SINGLE_SYSCAP_LEN] = nullptr;
     char priSyscap[] = "Device.syscap1GEDR,Device.syscap2WREGW,Vendor.syscap3RGD,Vendor.syscap4RWEG,Vendor.syscap5REWGWE,";
     int decodePriCnt;
     char expectPriOutput001[] = "SystemCapability.Device.syscap1GEDR";
@@ -104,15 +105,15 @@ HWTEST_F(SyscapCodecTest, DecodePrivateSyscap, TestSize.Level1)
  */
 HWTEST_F(SyscapCodecTest, DecodePrivateSyscap1, TestSize.Level1)
 {
-    char *charPriInput = NULL;
-    char (*priOutput)[SINGLE_SYSCAP_LEN] = NULL;
+    char *charPriInput = nullptr;
+    char (*priOutput)[SINGLE_SYSCAP_LEN] = nullptr;
     int priOutLen;
     int decodePriCnt;
 
     EXPECT_TRUE(EncodePrivateSyscap(&charPriInput, &priOutLen));
     if (priOutLen == 0) {
         EXPECT_TRUE(DecodePrivateSyscap(charPriInput, &priOutput, &decodePriCnt));
-        EXPECT_EQ((void *)priOutput, (void *)NULL);
+        EXPECT_EQ((void *)priOutput, (void *)nullptr);
         EXPECT_EQ(decodePriCnt, 0);
         free(priOutput);
     }
@@ -148,7 +149,7 @@ HWTEST_F(SyscapCodecTest, ComparePcidString, TestSize.Level1)
     EXPECT_EQ(result.targetApiVersion, 0);
     EXPECT_EQ(result.missSyscapNum, 0);
     for (int i = 0; i < MAX_MISS_SYSCAP; i++) {
-        EXPECT_EQ((void *)result.syscap[i], (void *)NULL);
+        EXPECT_EQ((void *)result.syscap[i], (void *)nullptr);
     }
 }
 } // namespace Syscap