diff --git a/frameworks/js/jsi/src/jsi_list.cpp b/frameworks/js/jsi/src/jsi_list.cpp
index 6b74eb30dcf5e5092239e8a2822acfce95249a49..c732b9457f1a05a4df399bfc6c29f298fdefa0ff 100644
--- a/frameworks/js/jsi/src/jsi_list.cpp
+++ b/frameworks/js/jsi/src/jsi_list.cpp
@@ -51,6 +51,9 @@ HcfResult ListAddObjNode(LiteAlgType type, uint32_t addAddr)
     }
     obj->objAddr = addAddr;
 
+    if (GetListHeader(type) == nullptr) {
+        return HCF_INVALID_PARAMS;
+    }
     if (GetListHeader(type)->pstNext == nullptr) {
         LOS_ListInit(GetListHeader(type));
     }
@@ -63,6 +66,9 @@ void ListDeleteObjNode(LiteAlgType type, uint32_t deleteAddr)
 {
     ObjList *obj = nullptr;
     ObjList *objNext = nullptr;
+    if (GetListHeader(type) == nullptr) {
+        return;
+    }
     LOS_DL_LIST_FOR_EACH_ENTRY_SAFE(obj, objNext, GetListHeader(type), ObjList, listNode) {
         if (obj == nullptr) {
             return;
@@ -81,6 +87,9 @@ void ListDestroy(LiteAlgType type)
 {
     ObjList *obj = nullptr;
     ObjList *objNext = nullptr;
+    if (GetListHeader(type) == nullptr) {
+        return;
+    }
     LOS_DL_LIST_FOR_EACH_ENTRY_SAFE(obj, objNext, GetListHeader(type), ObjList, listNode) {
         if (obj == nullptr) {
             return;
diff --git a/frameworks/js/jsi/src/jsi_md.cpp b/frameworks/js/jsi/src/jsi_md.cpp
index 08bf0109bf08833c3d3570fd44319d78a457c510..9c50ede16f40611a48216034dc113d172e2edb8f 100644
--- a/frameworks/js/jsi/src/jsi_md.cpp
+++ b/frameworks/js/jsi/src/jsi_md.cpp
@@ -40,12 +40,14 @@ JSIValue CryptoFrameworkLiteModule::CreateMd(const JSIValue thisVal, const JSIVa
     HcfResult res = HcfMdCreate(reinterpret_cast<const char *>(alg), &mdObj);
     if (res != HCF_SUCCESS) {
         LOGE("CreateMd is mdObj err res %d!", res);
+        JSI::ReleaseString(alg);
         return ThrowErrorCodeResult(res);
     }
     res = ListAddObjNode(JSI_ALG_MD, (uint32_t)mdObj);
     if (res != HCF_SUCCESS) {
         LOGE("md add node is %d err!", res);
         HcfObjDestroy(static_cast<void *>(mdObj));
+        JSI::ReleaseString(alg);
         return ThrowErrorCodeResult(res);
     }
 
@@ -63,6 +65,7 @@ JSIValue CryptoFrameworkLiteModule::CreateMd(const JSIValue thisVal, const JSIVa
     JSI::SetNumberProperty(serviceObj, "mdObj", (double)(uint32_t)mdObj);
     JSI::ReleaseValueList(update, updateSync, digest, digestSync, getMdLength, ARGS_END);
 
+    JSI::ReleaseString(alg);
     return serviceObj;
 }