diff --git a/test/fuzztest/abilitymgruiextensionsessioninfo_fuzzer/abilitymgruiextensionsessioninfo_fuzzer.cpp b/test/fuzztest/abilitymgruiextensionsessioninfo_fuzzer/abilitymgruiextensionsessioninfo_fuzzer.cpp
index da00ac350744da77ea1ef9a418ac33f7a95e9086..2c19e67dcfa7d59755e34e7dcb591a0bfc6ad273 100644
--- a/test/fuzztest/abilitymgruiextensionsessioninfo_fuzzer/abilitymgruiextensionsessioninfo_fuzzer.cpp
+++ b/test/fuzztest/abilitymgruiextensionsessioninfo_fuzzer/abilitymgruiextensionsessioninfo_fuzzer.cpp
@@ -34,17 +34,17 @@ bool DoSomethingInterestingWithMyAPI(const uint8_t *data, size_t size)
     std::shared_ptr<UIExtensionSessionInfo> uiExtensionSessionInfo = std::make_shared<UIExtensionSessionInfo>();
     Parcel parcel;
     FuzzedDataProvider fdp(data, size);
+    ElementName element, hostElement;
+    // persistentId(int32), hostWindowId(uint32), uiExtensionUsageType(uint32)
+    // element, extensionAbilityType(int32), hostElement
     parcel.WriteInt32(fdp.ConsumeIntegral<int32_t>());
-    parcel.WriteInt32(uiExtensionSessionInfo->persistentId);
-    uiExtensionSessionInfo->Marshalling(parcel);
     parcel.WriteUint32(fdp.ConsumeIntegral<uint32_t>());
-    parcel.WriteUint32(uiExtensionSessionInfo->hostWindowId);
-    uiExtensionSessionInfo->Marshalling(parcel);
-    parcel.WriteUint32(static_cast<uint32_t>(uiExtensionSessionInfo->uiExtensionUsage));
-    uiExtensionSessionInfo->Marshalling(parcel);
-    parcel.WriteInt32(static_cast<int32_t>(uiExtensionSessionInfo->extensionAbilityType));
-    uiExtensionSessionInfo->Marshalling(parcel);
-    uiExtensionSessionInfo->Unmarshalling(parcel);
+    parcel.WriteUint32(fdp.ConsumeIntegral<uint32_t>());
+    parcel.WriteParcelable(&element);
+    parcel.WriteInt32(fdp.ConsumeIntegral<int32_t>());
+    parcel.WriteParcelable(&hostElement);
+    uiExtensionSessionInfo.reset(uiExtensionSessionInfo->Unmarshalling(parcel));
+    uiExtensionSessionInfo.Marshalling(parcel);
     return true;
 }
 }
diff --git a/test/fuzztest/preloaduiextstateobserver_fuzzer/preloaduiextstateobserver_fuzzer.cpp b/test/fuzztest/preloaduiextstateobserver_fuzzer/preloaduiextstateobserver_fuzzer.cpp
index 91ed64355c8865f07ad5076623e44d7538c22ad2..b97ae076deb42383e279ed1f9fdfcb41efb0f42b 100644
--- a/test/fuzztest/preloaduiextstateobserver_fuzzer/preloaduiextstateobserver_fuzzer.cpp
+++ b/test/fuzztest/preloaduiextstateobserver_fuzzer/preloaduiextstateobserver_fuzzer.cpp
@@ -31,7 +31,12 @@ constexpr size_t STRING_MAX_LENGTH = 128;
 bool DoSomethingInterestingWithMyAPI(const uint8_t *data, size_t size)
 {
     FuzzedDataProvider fdp(data, size);
-    std::shared_ptr<AbilityRuntime::ExtensionRecord> extRecord;
+    AbilityRequest abilityRequest;
+    abilityRequest.appInfo.bundleName = fdp.ConsumeRandomLengthString(STRING_MAX_LENGTH);;
+    abilityRequest.appInfo.name = fdp.ConsumeRandomLengthString(STRING_MAX_LENGTH);
+    abilityRequest.appInfo.type = AppExecFwk::AbilityType::EXTENSION;
+    auto abilityRecord = AbilityRecord::CreateAbilityRecord(abilityRequest);
+    std::shared_ptr<AbilityRuntime::ExtensionRecord> extRecord = std::make_shared<AbilityRuntime::ExtensionRecord>(abilityRecord);
     std::weak_ptr<AbilityRuntime::ExtensionRecord> weakExtRecord = extRecord;
     std::shared_ptr<AAFwk::PreLoadUIExtStateObserver> preLoad =
         std::make_shared<AAFwk::PreLoadUIExtStateObserver>(weakExtRecord);
diff --git a/test/fuzztest/uiextensionrecordfactory_fuzzer/uiextensionrecordfactory_fuzzer.cpp b/test/fuzztest/uiextensionrecordfactory_fuzzer/uiextensionrecordfactory_fuzzer.cpp
index 1bd5d3df2c119048f0d2d69003a1cfed09d5997a..10817d8bbd3051419579edfc432d962ad109b1cb 100644
--- a/test/fuzztest/uiextensionrecordfactory_fuzzer/uiextensionrecordfactory_fuzzer.cpp
+++ b/test/fuzztest/uiextensionrecordfactory_fuzzer/uiextensionrecordfactory_fuzzer.cpp
@@ -23,6 +23,8 @@
 #undef protected
 #undef private
 #include "ability_record.h"
+#include "session_info.h"
+#include "multi_instance_utils.h"
 
 using namespace OHOS::AAFwk;
 using namespace OHOS::AppExecFwk;
@@ -38,6 +40,7 @@ constexpr size_t OFFSET_ZERO = 24;
 constexpr size_t OFFSET_ONE = 16;
 constexpr size_t OFFSET_TWO = 8;
 constexpr uint8_t ENABLE = 2;
+const std::string UIEXTENSION_ABILITY_ID = "ability.want.params.uiExtensionAbilityId";
 } // namespace
 
 uint32_t GetU32Data(const char* ptr)
@@ -60,6 +63,15 @@ bool DoSomethingInterestingWithMyAPI(const char *data, size_t size)
     std::shared_ptr<AAFwk::AbilityRecord> abilityRecord;
     factory->CreateDebugRecord(abilityRequest, abilityRecord);
 
+    abilityRequest.appInfo.bundleName = "com.example.unittest";
+    appInfo.multiAppMode.multiAppModeType = AppExecFwk::MultiAppModeType::MULTI_INSTANCE;
+    abilityRequest.abilityInfo.name = "MainAbility";
+    abilityRequest.abilityInfo.type = AppExecFwk::AbilityType::EMBEDDED_UI;
+    sptr<AAFwk::SessionInfo> sessionInfo(new SessionInfo());
+    abilityRequest.sessionInfo = sessionInfo;
+    abilityRequest.sessionInfo->want.SetParam(UIEXTENSION_ABILITY_ID, 0);
+    factory->NeedReuse(abilityRequest, int32Param);
+    factory->CreateRecord(abilityRequest, extensionRecord);
     return true;
 }
 } // namespace OHOS