diff --git a/plugins/wasm-go/extensions/frontend-gray/README.md b/plugins/wasm-go/extensions/frontend-gray/README.md
index af92008377..dce90802c6 100644
--- a/plugins/wasm-go/extensions/frontend-gray/README.md
+++ b/plugins/wasm-go/extensions/frontend-gray/README.md
@@ -31,8 +31,8 @@
 |------------|--------------|------|-----|------------------------------|
 | `host`     | string       | 非必填  | -   | host地址，如果是OSS则设置为 VPC 内网访问地址 |
 | `notFoundUri` | string       | 非必填  | -   | 404 页面配置                     |
-| `indexRouting`    | object       | 非必填  | -   | 首页重写配置                       |
-| `fileRouting`     | object       | 非必填  | -   | 文件重写配置                       |
+| `indexRouting`    | map of string to string       | 非必填  | -   | 用于定义首页重写路由规则。每个键 (Key) 表示首页的路由路径，值 (Value) 则指向重定向的目标文件。例如，键为 `/app1` 对应的值为 `/mfe/app1/{version}/index.html`。生效version为`0.0.1`， 访问路径为 `/app1`，则重定向到 `/mfe/app1/0.0.1/index.html`。                     |
+| `fileRouting`     | map of string to string       | 非必填  | -   | 用于定义资源文件重写路由规则。每个键 (Key) 表示资源访问路径，值 (Value) 则指向重定向的目标文件。例如，键为 `/app1/` 对应的值为 `/mfe/app1/{version}`。生效version为`0.0.1`，访问路径为 `/app1/js/a.js`，则重定向到 `/mfe/app1/0.0.1/js/a.js`。                     |
 
 `baseDeployment`字段配置说明：
 
diff --git a/plugins/wasm-go/extensions/frontend-gray/main.go b/plugins/wasm-go/extensions/frontend-gray/main.go
index 17e03922b4..365c200f95 100644
--- a/plugins/wasm-go/extensions/frontend-gray/main.go
+++ b/plugins/wasm-go/extensions/frontend-gray/main.go
@@ -38,10 +38,9 @@ func onHttpRequestHeaders(ctx wrapper.HttpContext, grayConfig config.GrayConfig,
 
 	cookies, _ := proxywasm.GetHttpRequestHeader("cookie")
 	path, _ := proxywasm.GetHttpRequestHeader(":path")
-	accept, _ := proxywasm.GetHttpRequestHeader("accept")
 	fetchMode, _ := proxywasm.GetHttpRequestHeader("sec-fetch-mode")
 
-	isIndex := util.IsIndexRequest(fetchMode, accept, path)
+	isIndex := util.IsIndexRequest(fetchMode, path)
 	hasRewrite := len(grayConfig.Rewrite.File) > 0 || len(grayConfig.Rewrite.Index) > 0
 	grayKeyValue := util.GetGrayKey(util.ExtractCookieValueByKey(cookies, grayConfig.GrayKey), grayConfig.GraySubKey)
 
diff --git a/plugins/wasm-go/extensions/frontend-gray/util/utils.go b/plugins/wasm-go/extensions/frontend-gray/util/utils.go
index 45d30da677..9b0cb52080 100644
--- a/plugins/wasm-go/extensions/frontend-gray/util/utils.go
+++ b/plugins/wasm-go/extensions/frontend-gray/util/utils.go
@@ -99,18 +99,12 @@ var indexSuffixes = []string{
 }
 
 // IsIndexRequest determines if the request is an index request
-func IsIndexRequest(fetchMode string, accept string, p string) bool {
+func IsIndexRequest(fetchMode string, p string) bool {
 	if fetchMode == "cors" {
 		return false
 	}
-
-	for _, suffix := range indexSuffixes {
-		if strings.HasSuffix(p, suffix) {
-			return true
-		}
-	}
-
-	return path.Ext(p) == ""
+	ext := path.Ext(p)
+	return ext == "" || ContainsValue(indexSuffixes, ext)
 }
 
 // 首页Rewrite
diff --git a/plugins/wasm-go/extensions/frontend-gray/util/utils_test.go b/plugins/wasm-go/extensions/frontend-gray/util/utils_test.go
index 4ab7154923..147c32311b 100644
--- a/plugins/wasm-go/extensions/frontend-gray/util/utils_test.go
+++ b/plugins/wasm-go/extensions/frontend-gray/util/utils_test.go
@@ -79,3 +79,26 @@ func TestPrefixFileRewrite(t *testing.T) {
 		})
 	}
 }
+
+func TestIsIndexRequest(t *testing.T) {
+	var tests = []struct {
+		fetchMode string
+		p         string
+		output    bool
+	}{
+		{"cors", "/js/a.js", false},
+		{"no-cors", "/js/a.js", false},
+		{"no-cors", "/images/a.png", false},
+		{"no-cors", "/index", true},
+		{"cors", "/inde", false},
+		{"no-cors", "/index.html", true},
+		{"no-cors", "/demo.php", true},
+	}
+	for _, test := range tests {
+		testPath := test.p
+		t.Run(testPath, func(t *testing.T) {
+			output := IsIndexRequest(test.fetchMode, testPath)
+			assert.Equal(t, test.output, output)
+		})
+	}
+}