diff --git a/test/fuzztest/BUILD.gn b/test/fuzztest/BUILD.gn
index 49bed1ad8e626485de8fc506cedb90b06efeeaec..80190ea050e1aa5f3567ce855e75303618233b9c 100644
--- a/test/fuzztest/BUILD.gn
+++ b/test/fuzztest/BUILD.gn
@@ -22,6 +22,7 @@ group("fuzztest") {
     "fileshare_fuzzer:FileShareFuzzTest",
     "remotefileshare_fuzzer:RemoteFileShareFuzzTest",
     "servicereverse_fuzzer:ServiceReverseFuzzTest",
+    "svcextensionproxy_fuzzer:SvcExtensionProxyFuzzTest",
     "svcrestoredepsmanager_fuzzer:SvcRestoreDepsManagerFuzzTest",
   ]
 }
diff --git a/test/fuzztest/svcextensionproxy_fuzzer/BUILD.gn b/test/fuzztest/svcextensionproxy_fuzzer/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..196111fda125bdce60cfe596d3e919946781cdc5
--- /dev/null
+++ b/test/fuzztest/svcextensionproxy_fuzzer/BUILD.gn
@@ -0,0 +1,61 @@
+# Copyright (c) 2021-2024 Huawei Device Co., Ltd.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+#####################hydra-fuzz###################
+import("//build/config/features.gni")
+import("//build/test.gni")
+import("//foundation/filemanagement/app_file_service/app_file_service.gni")
+import("//foundation/filemanagement/app_file_service/backup.gni")
+
+##############################fuzztest##########################################
+ohos_fuzztest("SvcExtensionProxyFuzzTest") {
+  module_out_path = "app_file_service/app_file_service"
+  fuzz_config_file =
+      "${app_file_service_path}/test/fuzztest/svcextensionproxy_fuzzer"
+  include_dirs = [
+    "${path_backup}/interfaces/inner_api/native/backup_kit_inner/impl",
+    "${path_backup}/services/backup_sa/include",
+    "${path_backup}/tests/unittests/backup_api/backup_impl/include",
+    "${path_backup_mock}/module_ipc/app_gallery_dispose_proxy_mock.cpp",
+  ]
+  cflags = [
+    "-g",
+    "-O0",
+    "-Wno-unused-variable",
+    "-fno-omit-frame-pointer",
+  ]
+
+  sources = [
+    "$path_backup_mock/module_ipc/svc_extension_proxy_mock.cpp",
+    "svcextensionproxy_fuzzer.cpp",
+  ]
+
+  deps = [
+    "${path_backup}/utils:backup_utils",
+    "${path_backup}/tests/utils:backup_test_utils",
+    "//third_party/googletest:gmock_main",
+  ]
+
+  external_deps = [
+    "c_utils:utils",
+    "ipc:ipc_core",
+  ]
+
+  defines = [
+    "LOG_TAG=\"app_file_service\"",
+    "LOG_DOMAIN=0xD200000",
+  ]
+}
+
+###############################################################################
+
diff --git a/test/fuzztest/svcextensionproxy_fuzzer/corpus/init b/test/fuzztest/svcextensionproxy_fuzzer/corpus/init
new file mode 100644
index 0000000000000000000000000000000000000000..6198079a28e860189d4294f6598f8ac6804c0dff
--- /dev/null
+++ b/test/fuzztest/svcextensionproxy_fuzzer/corpus/init
@@ -0,0 +1,16 @@
+/*
+ * Copyright (c) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+FUZZ
\ No newline at end of file
diff --git a/test/fuzztest/svcextensionproxy_fuzzer/project.xml b/test/fuzztest/svcextensionproxy_fuzzer/project.xml
new file mode 100644
index 0000000000000000000000000000000000000000..7133b2b92440904a5ed04b838733acea0f97486a
--- /dev/null
+++ b/test/fuzztest/svcextensionproxy_fuzzer/project.xml
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (c) 2024 Huawei Device Co., Ltd.
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<fuzz_config>
+  <fuzztest>
+    <!-- maximum length of a test input -->
+    <max_len>1000</max_len>
+    <!-- maximum total time in seconds to run the fuzzer -->
+    <max_total_time>300</max_total_time>
+    <!-- memory usage limit in Mb -->
+    <rss_limit_mb>4096</rss_limit_mb>
+  </fuzztest>
+</fuzz_config>
diff --git a/test/fuzztest/svcextensionproxy_fuzzer/svcextensionproxy_fuzzer.cpp b/test/fuzztest/svcextensionproxy_fuzzer/svcextensionproxy_fuzzer.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..83af9cdfbac9495e47524d1c6cbb167bac74d24d
--- /dev/null
+++ b/test/fuzztest/svcextensionproxy_fuzzer/svcextensionproxy_fuzzer.cpp
@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "svcextensionproxy_fuzzer.h"
+
+#include <cstddef>
+#include <cstdint>
+#include <cstring>
+
+#include "ext_extension_mock.h"
+#include "module_ipc/svc_extension_proxy.h"
+#include "unique_fd.h"
+
+using namespace OHOS::FileManagement::Backup;
+using namespace std;
+
+namespace OHOS {
+bool SvcExtensionProxyFuzzTest(const uint8_t *data, size_t size)
+{
+    if ((data == nullptr) || (size < sizeof(int))) {
+        return false;
+    }
+    
+    sptr<BackupExtExtensionMock> mock_ = sptr(new BackupExtExtensionMock());
+    sptr<SvcExtensionProxy> proxy_ = sptr(new SvcExtensionProxy(mock_));
+    std::string fileName((const char *)data, size);
+
+    proxy_->GetFileHandle(fileName);
+    proxy_->HandleClear();
+    proxy_->HandleBackup();
+    proxy_->PublishFile(fileName);
+    proxy_->HandleRestore();
+    proxy_->GetIncrementalFileHandle(fileName);
+    proxy_->PublishIncrementalFile(fileName);
+
+    int incrementalId = -1;
+    int manifestId = -1;
+
+    if (size >= sizeof(int)) {
+        incrementalId = *(reinterpret_cast<const int *>(data));
+        manifestId = incrementalId;
+    }
+
+    if (size >= sizeof(int) + sizeof(int))  {
+        manifestId = *(reinterpret_cast<const int *>(data + sizeof(int)));
+    }
+
+    UniqueFd incrementalFd(incrementalId);
+    UniqueFd manifestFd(manifestId);
+    proxy_->HandleIncrementalBackup(move(incrementalFd), move(manifestFd));
+    proxy_->GetIncrementalBackupFileHandle();
+    return true;
+}
+}// namespace OHOS
+
+/* Fuzzer entry point */
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
+{
+    /* Run your code on data */
+    if (data == nullptr) {
+        return 0;
+    }
+
+    OHOS::SvcExtensionProxyFuzzTest(data, size);
+    return 0;
+}
\ No newline at end of file
diff --git a/test/fuzztest/svcextensionproxy_fuzzer/svcextensionproxy_fuzzer.h b/test/fuzztest/svcextensionproxy_fuzzer/svcextensionproxy_fuzzer.h
new file mode 100644
index 0000000000000000000000000000000000000000..6146814186dbd93163666bec496f453e753b090b
--- /dev/null
+++ b/test/fuzztest/svcextensionproxy_fuzzer/svcextensionproxy_fuzzer.h
@@ -0,0 +1,21 @@
+/*
+ * Copyright (c) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef SVCEXTENSIONPROXY_FUZZER_H
+#define SVCEXTENSIONPROXY_FUZZER_H
+
+#define FUZZ_PROJECT_NAME "svcextensionproxy_fuzzer"
+
+#endif
\ No newline at end of file