diff --git a/clients/cache/disk_cache.go b/clients/cache/disk_cache.go
index cec60ab3..bc51b15d 100644
--- a/clients/cache/disk_cache.go
+++ b/clients/cache/disk_cache.go
@@ -21,9 +21,12 @@ import (
 	"fmt"
 	"io/ioutil"
 	"os"
+	"runtime"
 	"strconv"
+	"strings"
 
 	"github.com/go-errors/errors"
+	"github.com/nacos-group/nacos-sdk-go/common/constant"
 	"github.com/nacos-group/nacos-sdk-go/common/file"
 	"github.com/nacos-group/nacos-sdk-go/common/logger"
 	"github.com/nacos-group/nacos-sdk-go/model"
@@ -31,6 +34,11 @@ import (
 )
 
 func GetFileName(cacheKey string, cacheDir string) string {
+
+	if runtime.GOOS == constant.OS_WINDOWS {
+		cacheKey = strings.ReplaceAll(cacheKey, ":", constant.WINDOWS_LEGAL_NAME_SPLITER)
+	}
+
 	return cacheDir + string(os.PathSeparator) + cacheKey
 }
 
diff --git a/clients/cache/disk_cache_test.go b/clients/cache/disk_cache_test.go
new file mode 100644
index 00000000..bbbabee0
--- /dev/null
+++ b/clients/cache/disk_cache_test.go
@@ -0,0 +1,36 @@
+/*
+ * Copyright 1999-2020 Alibaba Group Holding 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.
+ */
+
+package cache
+
+import (
+	"runtime"
+	"testing"
+
+	"github.com/nacos-group/nacos-sdk-go/common/constant"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestGetFileName(t *testing.T) {
+
+	name := GetFileName("nacos@@providers:org.apache.dubbo.UserProvider:hangzhou", "tmp")
+
+	if runtime.GOOS == constant.OS_WINDOWS {
+		assert.Equal(t, name, "tmp\\nacos@@providers&&org.apache.dubbo.UserProvider&&hangzhou")
+	} else {
+		assert.Equal(t, name, "tmp/nacos@@providers:org.apache.dubbo.UserProvider:hangzhou")
+	}
+}
diff --git a/common/constant/const.go b/common/constant/const.go
index e356ad3b..f7f50439 100644
--- a/common/constant/const.go
+++ b/common/constant/const.go
@@ -75,4 +75,6 @@ const (
 	NAMING_INSTANCE_ID_SPLITTER = "#"
 	DefaultClientErrorCode      = "SDK.NacosError"
 	DEFAULT_SERVER_SCHEME       = "http"
+	WINDOWS_LEGAL_NAME_SPLITER  = "&&"
+	OS_WINDOWS                  = "windows"
 )