diff --git a/services/distributeddataservice/service/kvdb/kvdb_service_stub.cpp b/services/distributeddataservice/service/kvdb/kvdb_service_stub.cpp
index 8894c4ade4fe5e128e70afde19bc187e52100bf0..1da51ce462fb7232c9cd535dba3ad376547de188 100644
--- a/services/distributeddataservice/service/kvdb/kvdb_service_stub.cpp
+++ b/services/distributeddataservice/service/kvdb/kvdb_service_stub.cpp
@@ -23,7 +23,8 @@
 #include "utils/anonymous.h"
 namespace OHOS::DistributedKv {
 using namespace OHOS::DistributedData;
-const KVDBServiceStub::Handler KVDBServiceStub::HANDLERS[TRANS_BUTT] = {
+const KVDBServiceStub::Handler
+    KVDBServiceStub::HANDLERS[static_cast<uint32_t>(KVDBServiceInterfaceCode::TRANS_BUTT)] = {
     &KVDBServiceStub::OnGetStoreIds,
     &KVDBServiceStub::OnBeforeCreate,
     &KVDBServiceStub::OnAfterCreate,
@@ -53,8 +54,10 @@ int KVDBServiceStub::OnRemoteRequest(uint32_t code, MessageParcel &data, Message
         return -1;
     }
 
-    if (TRANS_HEAD > code || code >= TRANS_BUTT || HANDLERS[code] == nullptr) {
-        ZLOGE("not support code:%{public}u, BUTT:%{public}d", code, TRANS_BUTT);
+    if (static_cast<uint32_t>(KVDBServiceInterfaceCode::TRANS_HEAD) > code ||
+        code >= static_cast<uint32_t>(KVDBServiceInterfaceCode::TRANS_BUTT) || HANDLERS[code] == nullptr) {
+        ZLOGE("not support code:%{public}u, BUTT:%{public}d", code,
+              static_cast<uint32_t>(KVDBServiceInterfaceCode::TRANS_BUTT));
         return -1;
     }
 
diff --git a/services/distributeddataservice/service/kvdb/kvdb_service_stub.h b/services/distributeddataservice/service/kvdb/kvdb_service_stub.h
index ab0bacc494d2e6df8019b6a077d2e563102f7c99..00b1763def44b6c8f646ad4139525b3046e34129 100644
--- a/services/distributeddataservice/service/kvdb/kvdb_service_stub.h
+++ b/services/distributeddataservice/service/kvdb/kvdb_service_stub.h
@@ -15,6 +15,7 @@
 
 #ifndef OHOS_DISTRIBUTED_DATA_SERVICE_KVDB_SERVICE_STUB_H
 #define OHOS_DISTRIBUTED_DATA_SERVICE_KVDB_SERVICE_STUB_H
+#include "distributeddata_kvdb_ipc_interface_code.h"
 #include "iremote_stub.h"
 #include "kvdb_service.h"
 #include "feature/feature_system.h"
@@ -43,7 +44,7 @@ private:
     int32_t OnSubscribe(const AppId &appId, const StoreId &storeId, MessageParcel &data, MessageParcel &reply);
     int32_t OnUnsubscribe(const AppId &appId, const StoreId &storeId, MessageParcel &data, MessageParcel &reply);
     int32_t OnGetBackupPassword(const AppId &appId, const StoreId &storeId, MessageParcel &data, MessageParcel &reply);
-    static const Handler HANDLERS[TRANS_BUTT];
+    static const Handler HANDLERS[static_cast<uint32_t>(KVDBServiceInterfaceCode::TRANS_BUTT)];
 };
 } // namespace OHOS::DistributedKv
 #endif // OHOS_DISTRIBUTED_DATA_SERVICE_KVDB_SERVICE_STUB_H
diff --git a/services/distributeddataservice/service/test/fuzztest/udmfservice_fuzzer/BUILD.gn b/services/distributeddataservice/service/test/fuzztest/udmfservice_fuzzer/BUILD.gn
index 30a813999ea87d65ed32557b3d8b22f4f1ab06ca..92b49df75ba4e7198f70e0f446af83ffdd20c3d4 100644
--- a/services/distributeddataservice/service/test/fuzztest/udmfservice_fuzzer/BUILD.gn
+++ b/services/distributeddataservice/service/test/fuzztest/udmfservice_fuzzer/BUILD.gn
@@ -44,7 +44,10 @@ ohos_fuzztest("UdmfServiceFuzzTest") {
 
   sources = [ "udmfservice_fuzzer.cpp" ]
 
-  deps = [ "${data_service_path}/service/udmf:udmf_server" ]
+  deps = [
+    "${data_service_path}/framework:distributeddatasvcfwk",
+    "${data_service_path}/service/udmf:udmf_server",
+  ]
 
   external_deps = [
     "ability_base:zuri",
diff --git a/services/distributeddataservice/service/udmf/udmf_service_stub.cpp b/services/distributeddataservice/service/udmf/udmf_service_stub.cpp
index febb3a3d3c026398277c3b1088ba97727dec35d8..ca92a0fbf8bbe8b00517da6dc08765ee554508c1 100755
--- a/services/distributeddataservice/service/udmf/udmf_service_stub.cpp
+++ b/services/distributeddataservice/service/udmf/udmf_service_stub.cpp
@@ -27,23 +27,8 @@
 
 namespace OHOS {
 namespace UDMF {
-UdmfServiceStub::UdmfServiceStub()
-{
-    memberFuncMap_[static_cast<uint32_t>(SET_DATA)] = &UdmfServiceStub::OnSetData;
-    memberFuncMap_[static_cast<uint32_t>(GET_DATA)] = &UdmfServiceStub::OnGetData;
-    memberFuncMap_[static_cast<uint32_t>(GET_BATCH_DATA)] = &UdmfServiceStub::OnGetBatchData;
-    memberFuncMap_[static_cast<uint32_t>(UPDATE_DATA)] = &UdmfServiceStub::OnUpdateData;
-    memberFuncMap_[static_cast<uint32_t>(DELETE_DATA)] = &UdmfServiceStub::OnDeleteData;
-    memberFuncMap_[static_cast<uint32_t>(GET_SUMMARY)] = &UdmfServiceStub::OnGetSummary;
-    memberFuncMap_[static_cast<uint32_t>(ADD_PRIVILEGE)] = &UdmfServiceStub::OnAddPrivilege;
-    memberFuncMap_[static_cast<uint32_t>(SYNC)] = &UdmfServiceStub::OnSync;
-}
-
-UdmfServiceStub::~UdmfServiceStub()
-{
-    memberFuncMap_.clear();
-}
-
+constexpr UdmfServiceStub::Handler
+    UdmfServiceStub::HANDLERS[static_cast<uint32_t>(UdmfServiceInterfaceCode::CODE_BUTT)];
 int UdmfServiceStub::OnRemoteRequest(uint32_t code, MessageParcel &data, MessageParcel &reply)
 {
     ZLOGI("start##code = %{public}u", code);
@@ -53,18 +38,11 @@ int UdmfServiceStub::OnRemoteRequest(uint32_t code, MessageParcel &data, Message
         ZLOGE("end##descriptor checked fail");
         return -1;
     }
-    if (CODE_HEAD > code || code >= CODE_BUTT) {
+    if (static_cast<uint32_t>(UdmfServiceInterfaceCode::CODE_HEAD) > code ||
+        code >= static_cast<uint32_t>(UdmfServiceInterfaceCode::CODE_BUTT)) {
         return -1;
     }
-    auto itFunc = memberFuncMap_.find(code);
-    if (itFunc != memberFuncMap_.end()) {
-        auto memberFunc = itFunc->second;
-        if (memberFunc != nullptr) {
-            return (this->*memberFunc)(data, reply);
-        }
-    }
-    ZLOGI("end##ret = -1");
-    return -1;
+    return (this->*HANDLERS[code])(data, reply);
 }
 
 int32_t UdmfServiceStub::OnSetData(MessageParcel &data, MessageParcel &reply)
diff --git a/services/distributeddataservice/service/udmf/udmf_service_stub.h b/services/distributeddataservice/service/udmf/udmf_service_stub.h
index 9684d2ec976b9c49cbbb6fe8f349ab2ffa5b703c..d3a739999eff4280cb5d19a98be564dab15c4aa2 100755
--- a/services/distributeddataservice/service/udmf/udmf_service_stub.h
+++ b/services/distributeddataservice/service/udmf/udmf_service_stub.h
@@ -22,6 +22,7 @@
 #include "feature/feature_system.h"
 #include "message_parcel.h"
 
+#include "distributeddata_udmf_ipc_interface_code.h"
 #include "error_code.h"
 #include "udmf_service.h"
 
@@ -32,8 +33,6 @@ namespace UDMF {
  */
 class UdmfServiceStub : public UdmfService, public DistributedData::FeatureSystem::Feature {
 public:
-    UdmfServiceStub();
-    virtual ~UdmfServiceStub() override;
     int OnRemoteRequest(uint32_t code, MessageParcel &data, MessageParcel &reply) override;
 
 private:
@@ -52,8 +51,17 @@ private:
     const std::string WRITE_PERMISSION = "ohos.permission.WRITE_UDMF_DATA";
     const std::string SYNC_PERMISSION = "ohos.permission.SYNC_UDMF_DATA";
 
-    using UdmfServiceFunc = int32_t (UdmfServiceStub::*)(MessageParcel &data, MessageParcel &reply);
-    std::map<uint32_t, UdmfServiceFunc> memberFuncMap_;
+    using Handler = int32_t (UdmfServiceStub::*)(MessageParcel &data, MessageParcel &reply);
+    static constexpr Handler HANDLERS[static_cast<uint32_t>(UdmfServiceInterfaceCode::CODE_BUTT)] = {
+        &UdmfServiceStub::OnSetData,
+        &UdmfServiceStub::OnGetData,
+        &UdmfServiceStub::OnGetBatchData,
+        &UdmfServiceStub::OnUpdateData,
+        &UdmfServiceStub::OnDeleteData,
+        &UdmfServiceStub::OnGetSummary,
+        &UdmfServiceStub::OnAddPrivilege,
+        &UdmfServiceStub::OnSync
+    };
 };
 } // namespace UDMF
 } // namespace OHOS