diff --git a/tests/unittests/backup_utils/BUILD.gn b/tests/unittests/backup_utils/BUILD.gn
index 2b543823f4c4697ecbe3422a50e172127068a2ac..4a16ef68cc82112f2fd75758e5f3cca2ca2b088a 100644
--- a/tests/unittests/backup_utils/BUILD.gn
+++ b/tests/unittests/backup_utils/BUILD.gn
@@ -14,6 +14,31 @@
 import("//build/test.gni")
 import("//foundation/filemanagement/app_file_service/backup.gni")
 
+ohos_unittest("b_anony_test") {
+  branch_protector_ret = "pac_ret"
+  sanitize = {
+    integer_overflow = true
+    cfi = true
+    cfi_cross_dso = true
+    debug = false
+  }
+
+  module_out_path = path_module_out_tests
+
+  sources = [ "b_anony/b_anony_test.cpp" ]
+
+  deps = [
+    "${path_backup}/tests/utils:backup_test_utils",
+    "${path_backup}/utils/:backup_utils",
+  ]
+
+  external_deps = [ "hilog:libhilog" ]
+
+  defines = [ "private = public" ]
+
+  use_exceptions = true
+}
+
 ohos_unittest("b_error_test") {
   branch_protector_ret = "pac_ret"
   sanitize = {
@@ -374,6 +399,7 @@ group("backup_test") {
   testonly = true
 
   deps = [
+    ":b_anony_test",
     ":b_error_test",
     ":b_file_test",
     ":b_json_clear_data_test",
diff --git a/tests/unittests/backup_utils/b_anony/b_anony_test.cpp b/tests/unittests/backup_utils/b_anony/b_anony_test.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..fbe16d220b931208d1a4c23ef9705df5efb49e3b
--- /dev/null
+++ b/tests/unittests/backup_utils/b_anony/b_anony_test.cpp
@@ -0,0 +1,73 @@
+/*
+ * 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 <cstdio>
+#include <gtest/gtest.h>
+
+#include "b_anony/b_anony.h"
+
+namespace OHOS::FileManagement::Backup {
+class BAnonyTest : public testing::Test {
+public:
+    static void SetUpTestCase(void) {};
+    static void TearDownTestCase() {};
+    void SetUp() {};
+    void TearDown() {};
+};
+
+/**
+ * @tc.number: SUB_backup_b_anony_GetAnonyPath_0100
+ * @tc.name: b_anony_GetAnonyPath_0100
+ * @tc.desc: Test function of GetAnonyPath interface for SUCCESS.
+ * @tc.size: MEDIUM
+ * @tc.type: FUNC
+ * @tc.level Level 0
+ * @tc.require: I6F3GV
+ */
+HWTEST_F(BAnonyTest, b_anony_GetAnonyPath_0100, testing::ext::TestSize.Level0)
+{
+    GTEST_LOG_(INFO) << "BAnonyTest-begin b_anony_GetAnonyPath_0100";
+    try {
+        std::string path = "/";
+        std::string result = "/";
+        EXPECT_EQ(GetAnonyPath(path), result);
+        path = "//";
+        result = "//";
+        EXPECT_EQ(GetAnonyPath(path), result);
+        path = "test.txt";
+        result = "t******t.txt";
+        EXPECT_EQ(GetAnonyPath(path), result);
+        path = "/test.txt";
+        result = "/t******t.txt";
+        EXPECT_EQ(GetAnonyPath(path), result);
+        path = "/*/*/shfkwam/xxf/x/xdf.db.xxx.xx";
+        result = "/******/******/s******m/x******f/******/x******f.db.xxx.xx";
+        EXPECT_EQ(GetAnonyPath(path), result);
+        path = "/euxnems/ioio...xxx/sk.ppt";
+        result = "/e******s/i******x/******.ppt";
+        EXPECT_EQ(GetAnonyPath(path), result);
+        path = "/....../......";
+        result = "/.******./******......";
+        EXPECT_EQ(GetAnonyPath(path), result);
+        path = "downloads/../&^%&*#/IMGS.tar.lz4";
+        result = "d******s/******/&******#/I******S.tar.lz4";
+        EXPECT_EQ(GetAnonyPath(path), result);
+    } catch (...) {
+        EXPECT_TRUE(false);
+        GTEST_LOG_(INFO) << "BAnonyTest-an exception occurred by construction.";
+    }
+    GTEST_LOG_(INFO) << "BAnonyTest-end b_error_GetAnonyPath_0100";
+}
+}
\ No newline at end of file
diff --git a/utils/src/b_anony/b_anony.cpp b/utils/src/b_anony/b_anony.cpp
index ecbe941081d06fd837a32c96875411e2372cf32e..0e3b1c952e12d3982978eed5ca530aac97a1c0f2 100644
--- a/utils/src/b_anony/b_anony.cpp
+++ b/utils/src/b_anony/b_anony.cpp
@@ -48,16 +48,26 @@ std::string GetAnonyString(const std::string &value)
 std::string GetAnonyPath(const std::string &value)
 {
     std::string res;
-    std::string sub;
-    size_t found = value.find_last_of('/');
-    if (found == std::string::npos) {
-        sub = value;
-    } else {
-        sub = value.substr(found + 1);
-        res = value.substr(0, found + 1);
+    size_t pos = 0;
+    size_t found = value.find('/');
+    while (found != std::string::npos) {
+        if (pos != found) {
+            res += GetAnonyString(value.substr(pos, found - pos));
+        }
+        res += '/';
+        pos = found + 1;
+        found = value.find('/', pos);
+    }
+    //处理文件名
+    if (pos < value.length()) {
+        found = value.find('.', pos);
+        if (found != std::string::npos) {
+            res += GetAnonyString(value.substr(pos, found - pos));
+            res += value.substr(found);
+        } else {
+            res += GetAnonyString(value.substr(pos));
+        }
     }
-    res += GetAnonyString(sub);
-
     return res;
 }
 }
\ No newline at end of file