diff --git a/services/include/param/param.h b/services/include/param/param.h
index 7a57bf0006314b27998ec6e70c11586e216fa0a1..f19488a3aeaab8944dccb73341bd50ab395d0e56 100755
--- a/services/include/param/param.h
+++ b/services/include/param/param.h
@@ -28,6 +28,7 @@ extern "C" {
 #define PARAM_VALUE_LEN_MAX  96
 #define PARAM_NAME_LEN_MAX  96
 typedef uint32_t ParamHandle;
+typedef void * ParamContextPtr;
 
 typedef enum {
     PARAM_CODE_ERROR = -1,
diff --git a/services/include/param/sys_param.h b/services/include/param/sys_param.h
index 970898197619a8257d7f8e2784ed20e1ceebf35a..e58854b39668c023a591a16a23a11dfe7e4bb92d 100644
--- a/services/include/param/sys_param.h
+++ b/services/include/param/sys_param.h
@@ -65,7 +65,8 @@ int SystemGetParameterCommitId(ParamHandle handle, uint32_t *commitId);
  * 遍历参数。
  *
  */
-int SystemTraversalParameter(void (*traversalParameter)(ParamHandle handle, void* cookie), void* cookie);
+int SystemTraversalParameter(
+    void (*traversalParameter)(ParamHandle handle, ParamContextPtr cookie), ParamContextPtr cookie);
 
 /**
  * 外部接口
diff --git a/services/param/client/param_request.c b/services/param/client/param_request.c
index 24c5ab9759c6341c2dbb8b01957a372700ce4af4..557a690ffb62a96ce805c354f67e42bdb5312379 100644
--- a/services/param/client/param_request.c
+++ b/services/param/client/param_request.c
@@ -274,7 +274,8 @@ int SystemGetParameterValue(ParamHandle handle, char *value, unsigned int *len)
     return ReadParamValue(&g_clientSpace.paramSpace, handle, value, len);
 }
 
-int SystemTraversalParameter(void (*traversalParameter)(ParamHandle handle, void *cookie), void *cookie)
+int SystemTraversalParameter(
+    void (*traversalParameter)(ParamHandle handle, ParamContextPtr cookie), ParamContextPtr cookie)
 {
     InitParamClient();
     PARAM_CHECK(traversalParameter != NULL, return -1, "The param is null");
diff --git a/services/param/include/param_manager.h b/services/param/include/param_manager.h
index c14c4ba261d40c0a394e143e4b7f7dea3de0b69e..30f5f7eaabb39f0af0bf5e42ac1022ab163696b6 100644
--- a/services/param/include/param_manager.h
+++ b/services/param/include/param_manager.h
@@ -63,12 +63,12 @@ int CheckParamName(const char *name, int paramInfo);
 int CheckParamPermission(const ParamWorkSpace *workSpace,
     const ParamSecurityLabel *srcLabel, const char *name, uint32_t mode);
 
-typedef void (*TraversalParamPtr)(ParamHandle handle, void *context);
+typedef void (*TraversalParamPtr)(ParamHandle handle, ParamContextPtr context);
 typedef struct {
     TraversalParamPtr traversalParamPtr;
-    void *context;
+    ParamContextPtr context;
 } ParamTraversalContext;
-int TraversalParam(const ParamWorkSpace *workSpace, TraversalParamPtr walkFunc, void *cookie);
+int TraversalParam(const ParamWorkSpace *workSpace, TraversalParamPtr walkFunc, ParamContextPtr cookie);
 
 ParamWorkSpace *GetParamWorkSpace(void);
 ParamWorkSpace *GetClientParamWorkSpace(void);
diff --git a/services/param/manager/param_manager.c b/services/param/manager/param_manager.c
index abd7372b182baa0ee99d7cd7aceca72c3959a806..962ca02537e5ee763da81eb6d11e7191cbb93d2d 100644
--- a/services/param/manager/param_manager.c
+++ b/services/param/manager/param_manager.c
@@ -204,7 +204,7 @@ static int ProcessParamTraversal(const WorkSpace *workSpace, const ParamTrieNode
     return 0;
 }
 
-int TraversalParam(const ParamWorkSpace *workSpace, TraversalParamPtr walkFunc, void *cookie)
+int TraversalParam(const ParamWorkSpace *workSpace, TraversalParamPtr walkFunc, ParamContextPtr cookie)
 {
     PARAM_CHECK(workSpace != NULL && walkFunc != NULL, return PARAM_CODE_INVALID_PARAM, "Invalid param");
     ParamTraversalContext context = {
diff --git a/services/param/manager/param_utils.c b/services/param/manager/param_utils.c
index 58154227b07c5f19b550fcc2ff47d9d87b88efbb..77b34a0c542a993d58092d4cf430c23428dbeb50 100755
--- a/services/param/manager/param_utils.c
+++ b/services/param/manager/param_utils.c
@@ -114,7 +114,7 @@ static void TrimString(char *string, uint32_t currLen)
 
 int GetSubStringInfo(const char *buff, uint32_t buffLen, char delimiter, SubStringInfo *info, int subStrNumber)
 {
-    PARAM_CHECK(buff == NULL && info == NULL, return 0, "Invalid buff");
+    PARAM_CHECK(buff != NULL && info != NULL, return 0, "Invalid buff");
     size_t i = 0;
     // 去掉开始的空格
     for (; i < strlen(buff); i++) {