diff --git a/README.md b/README.md
index 0c1ef1c..c329bfe 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@
 
 本项目参考开源库 [Glide](https://github.com/bumptech/glide) 进行OpenHarmony的自研版本：
 
-- 支持自定义内存缓存策略，支持设置内存缓存的大小。
+- 支持自定义内存缓存策略，支持设置内存缓存的大小(默认LRU策略)。
 - 支持磁盘二级缓存，对于下载图片会保存一份至磁盘当中。
 - 支持自定义实现图片获取/网络下载
 - 支持监听网络下载回调进度
@@ -42,6 +42,9 @@
 ## 下载安装
 ```
 ohpm install @ohos/imageknife
+
+// 如果需要用文件缓存，需要提前初始化文件缓存
+await ImageKnife.getInstance().initFileCache(context, 256, 256 * 1024 * 1024)
 ```
 
 ## 使用说明
@@ -162,7 +165,7 @@ ImageKnifeComponent({ ImageKnifeOption:
 | addHeader        | key: string, value: Object | 全局添加http请求头   |
 | setHeaderOptions | Array<HeaderOptions> | 全局设置http请求头   |
 | deleteHeader     | key: string | 全局删除http请求头   |
-| setEngineKeyImpl | CustomEngineKeyImpl | 全局配置缓存key     |
+| setEngineKeyImpl | IEngineKey | 全局配置缓存key生成策略 |
 
 ## 约束与限制
 在下述版本验证通过：  
diff --git a/entry/src/main/ets/pages/ImageTransformation.ets b/entry/src/main/ets/pages/ImageTransformation.ets
index 5fd511d..4cbbcba 100644
--- a/entry/src/main/ets/pages/ImageTransformation.ets
+++ b/entry/src/main/ets/pages/ImageTransformation.ets
@@ -25,12 +25,6 @@ struct ImageTransformation {
             this.isBlur = value
             this.upedateImageKnifeOption()
           })
-          .mark({
-            strokeColor: Color.Black,
-            size: 50,
-            strokeWidth: 5
-          })
-          .unselectedColor(Color.Red)
           .width(30)
           .height(30)
         Text('模糊效果').fontSize(20)
diff --git a/entry/src/ohosTest/ets/test/DefaultJobQueueTest.test.ets b/entry/src/ohosTest/ets/test/DefaultJobQueueTest.test.ets
index 8aeb9b6..7816a73 100644
--- a/entry/src/ohosTest/ets/test/DefaultJobQueueTest.test.ets
+++ b/entry/src/ohosTest/ets/test/DefaultJobQueueTest.test.ets
@@ -54,13 +54,13 @@ export default function DefaultJobQueueTest() {
       job.add(makeRequest("medium4", getContext() as common.UIAbilityContext))
 
       expect(job.getQueueLength()).assertEqual(7)
-      expect(job.pop()!.ImageKnifeOption.loadSrc).assertEqual("high1")
-      expect(job.pop()!.ImageKnifeOption.loadSrc).assertEqual("medium1")
-      expect(job.pop()!.ImageKnifeOption.loadSrc).assertEqual("medium2")
-      expect(job.pop()!.ImageKnifeOption.loadSrc).assertEqual("medium3")
-      expect(job.pop()!.ImageKnifeOption.loadSrc).assertEqual("medium4")
-      expect(job.pop()!.ImageKnifeOption.loadSrc).assertEqual("low1")
-      expect(job.pop()!.ImageKnifeOption.loadSrc).assertEqual("low2")
+      expect(job.pop()!.imageKnifeOption.loadSrc).assertEqual("high1")
+      expect(job.pop()!.imageKnifeOption.loadSrc).assertEqual("medium1")
+      expect(job.pop()!.imageKnifeOption.loadSrc).assertEqual("medium2")
+      expect(job.pop()!.imageKnifeOption.loadSrc).assertEqual("medium3")
+      expect(job.pop()!.imageKnifeOption.loadSrc).assertEqual("medium4")
+      expect(job.pop()!.imageKnifeOption.loadSrc).assertEqual("low1")
+      expect(job.pop()!.imageKnifeOption.loadSrc).assertEqual("low2")
       expect(job.pop()).assertEqual(undefined)
       expect(job.getQueueLength()).assertEqual(0)
 
diff --git a/library/src/main/ets/ImageKnifeDispatcher.ets b/library/src/main/ets/ImageKnifeDispatcher.ets
index c6295d1..5e2a54f 100644
--- a/library/src/main/ets/ImageKnifeDispatcher.ets
+++ b/library/src/main/ets/ImageKnifeDispatcher.ets
@@ -48,7 +48,7 @@ export class ImageKnifeDispatcher {
 
   showFromMemomry(request: ImageKnifeRequest, imageSrc: string | PixelMap | Resource, requestSource: ImageKnifeRequestSource): boolean {
     let memoryCache: ImageKnifeData | undefined = ImageKnife.getInstance()
-      .loadFromMemoryCache(this.engineKeyImpl.generateMemoryKey(imageSrc, request.ImageKnifeOption))
+      .loadFromMemoryCache(this.engineKeyImpl.generateMemoryKey(imageSrc, request.imageKnifeOption))
     if (memoryCache !== undefined) {
       // 画主图
       if (request.requestState === ImageKnifeRequestState.PROGRESS) {
@@ -69,7 +69,7 @@ export class ImageKnifeDispatcher {
   enqueue(request: ImageKnifeRequest): void {
 
     //1.内存有的话直接渲染
-    if (this.showFromMemomry(request, request.ImageKnifeOption.loadSrc, ImageKnifeRequestSource.SRC)) {
+    if (this.showFromMemomry(request, request.imageKnifeOption.loadSrc, ImageKnifeRequestSource.SRC)) {
       return
     }
 
@@ -83,22 +83,22 @@ export class ImageKnifeDispatcher {
 
   executeJob(request: ImageKnifeRequest): void {
     // 加载占位符
-    if (request.ImageKnifeOption.placeholderSrc !== undefined) {
-      if (this.showFromMemomry(request, request.ImageKnifeOption.placeholderSrc, ImageKnifeRequestSource.PLACE_HOLDER) === false) {
-        this.getAndShowImage(request, request.ImageKnifeOption.placeholderSrc, ImageKnifeRequestSource.PLACE_HOLDER)
+    if (request.imageKnifeOption.placeholderSrc !== undefined) {
+      if (this.showFromMemomry(request, request.imageKnifeOption.placeholderSrc, ImageKnifeRequestSource.PLACE_HOLDER) === false) {
+        this.getAndShowImage(request, request.imageKnifeOption.placeholderSrc, ImageKnifeRequestSource.PLACE_HOLDER)
       }
     }
 
     // 加载主图
-    this.getAndShowImage(request, request.ImageKnifeOption.loadSrc, ImageKnifeRequestSource.SRC)
+    this.getAndShowImage(request, request.imageKnifeOption.loadSrc, ImageKnifeRequestSource.SRC)
   }
 
   /**
    * 获取和显示图片
    */
   getAndShowImage(currentRequest: ImageKnifeRequest, imageSrc: string | PixelMap | Resource, requestSource: ImageKnifeRequestSource): void {
-    let keyMemory: string = this.engineKeyImpl.generateMemoryKey(imageSrc, currentRequest.ImageKnifeOption)
-    let keyFile: string = this.engineKeyImpl.generateFileKey(imageSrc, currentRequest.ImageKnifeOption.signature)
+    let keyMemory: string = this.engineKeyImpl.generateMemoryKey(imageSrc, currentRequest.imageKnifeOption)
+    let keyFile: string = this.engineKeyImpl.generateFileKey(imageSrc, currentRequest.imageKnifeOption.signature)
     let requestList: List<ImageKnifeRequestWithSource> | undefined = this.executingJobMap.get(keyMemory)
     if (requestList == undefined) {
       requestList = new List()
@@ -113,18 +113,19 @@ export class ImageKnifeDispatcher {
       context: currentRequest.context,
       src: imageSrc,
       key: keyFile,
-      headers:currentRequest.ImageKnifeOption.headerOption,
+      headers:currentRequest.imageKnifeOption.headerOption,
       allHeaders:currentRequest.headers,
-      customGetImage: currentRequest.ImageKnifeOption.customGetImage,
-      onlyRetrieveFromCache: currentRequest.ImageKnifeOption.onlyRetrieveFromCache,
-      transformation:currentRequest.ImageKnifeOption.transformation,
+      customGetImage: currentRequest.imageKnifeOption.customGetImage,
+      onlyRetrieveFromCache: currentRequest.imageKnifeOption.onlyRetrieveFromCache,
+      transformation:currentRequest.imageKnifeOption.transformation,
+      writeCacheStrategy: currentRequest.imageKnifeOption.writeCacheStrategy,
       requestSource
     }
     // 启动线程下载和解码主图
     let task = new taskpool.Task(requestJob, request)
     // 监听网络回调事件
-    if (currentRequest.ImageKnifeOption.progressListener !== undefined && requestSource === ImageKnifeRequestSource.SRC) {
-      let progressCallBack = currentRequest.ImageKnifeOption.progressListener
+    if (currentRequest.imageKnifeOption.progressListener !== undefined && requestSource === ImageKnifeRequestSource.SRC) {
+      let progressCallBack = currentRequest.imageKnifeOption.progressListener
       emitter.on(Constants.PROGRESS_EMITTER, (data) => {
         progressCallBack(data?.data?.value as number)
       });
@@ -136,10 +137,10 @@ export class ImageKnifeDispatcher {
       if (pixelmap === undefined) {
         if (requestList !== undefined) {
           requestList.forEach((requestWithSource: ImageKnifeRequestWithSource) => {
-            if (requestWithSource.source === ImageKnifeRequestSource.SRC && currentRequest.ImageKnifeOption.errorholderSrc !== undefined) {
+            if (requestWithSource.source === ImageKnifeRequestSource.SRC && currentRequest.imageKnifeOption.errorholderSrc !== undefined) {
 
-              if (this.showFromMemomry(currentRequest, currentRequest.ImageKnifeOption.errorholderSrc, ImageKnifeRequestSource.ERROR_HOLDER) === false) {
-                this.getAndShowImage(currentRequest, currentRequest.ImageKnifeOption.errorholderSrc, ImageKnifeRequestSource.ERROR_HOLDER)
+              if (this.showFromMemomry(currentRequest, currentRequest.imageKnifeOption.errorholderSrc, ImageKnifeRequestSource.ERROR_HOLDER) === false) {
+                this.getAndShowImage(currentRequest, currentRequest.imageKnifeOption.errorholderSrc, ImageKnifeRequestSource.ERROR_HOLDER)
               }
             }
           });
@@ -150,7 +151,7 @@ export class ImageKnifeDispatcher {
         }
       }
       // 保存文件缓存
-      if (requestJobResult.bufferSize > 0 && currentRequest.ImageKnifeOption.writeCacheStrategy !== WriteCacheStrategyType.Memory) {
+      if (requestJobResult.bufferSize > 0 && currentRequest.imageKnifeOption.writeCacheStrategy !== WriteCacheStrategyType.Memory) {
         ImageKnife.getInstance().saveWithoutWriteFile(keyFile, requestJobResult.bufferSize)
       }
 
@@ -161,9 +162,9 @@ export class ImageKnifeDispatcher {
       }
 
       // 保存内存缓存
-      if(currentRequest.ImageKnifeOption.writeCacheStrategy !== WriteCacheStrategyType.File) {
+      if(currentRequest.imageKnifeOption.writeCacheStrategy !== WriteCacheStrategyType.File) {
         ImageKnife.getInstance()
-          .saveMemoryCache(this.engineKeyImpl.generateMemoryKey(imageSrc, currentRequest.ImageKnifeOption),
+          .saveMemoryCache(this.engineKeyImpl.generateMemoryKey(imageSrc, currentRequest.imageKnifeOption),
             ImageKnifeData)
       }
       if (requestList !== undefined) {
@@ -305,7 +306,7 @@ async function requestJob(request: RequestJobRequest): Promise<RequestJobResult
           });
 
           // 保存文件缓存
-          if (resBuf !== undefined) {
+          if (resBuf !== undefined && request.writeCacheStrategy !== WriteCacheStrategyType.Memory) {
             let copyBuf = buffer.concat([buffer.from(resBuf)]).buffer; // IDE有bug，不能直接获取resBuf.byteLength
             bufferSize = copyBuf.byteLength
             FileCache.saveFileCacheOnlyFile(request.context, request.key, resBuf)
@@ -324,7 +325,6 @@ async function requestJob(request: RequestJobRequest): Promise<RequestJobResult
         }
       }
     } else if ((request.src as Resource).id !== undefined) { //从资源文件获取
-      resBuf = FileCache.getFileCacheByFile(request.context, request.key)
       if (resBuf == undefined && request.onlyRetrieveFromCache != true && request.requestSource == 0) {
         resBuf = request.context.resourceManager.getMediaContentSync((request.src as Resource).id).buffer as ArrayBuffer
       } else if (resBuf == undefined  && request.requestSource != 0) {
@@ -401,4 +401,5 @@ interface RequestJobRequest {
   onlyRetrieveFromCache?: boolean
   requestSource:ImageKnifeRequestSource
   transformation?: PixelMapTransformation
+  writeCacheStrategy?: WriteCacheStrategyType
 }
diff --git a/library/src/main/ets/ImageKnifeRequest.ets b/library/src/main/ets/ImageKnifeRequest.ets
index 1a57671..5fc173d 100644
--- a/library/src/main/ets/ImageKnifeRequest.ets
+++ b/library/src/main/ets/ImageKnifeRequest.ets
@@ -25,7 +25,7 @@ export class ImageKnifeRequest {
   requestState: ImageKnifeRequestState = ImageKnifeRequestState.PROGRESS
   componentWidth: number = 0
   componentHeight: number = 0
-  ImageKnifeOption: ImageKnifeOption
+  imageKnifeOption: ImageKnifeOption
   context: common.UIAbilityContext
   ImageKnifeRequestCallback: ImageKnifeRequestCallback
   componentVersion: number = 0
@@ -36,7 +36,7 @@ export class ImageKnifeRequest {
               height: number,
               version: number,
               ImageKnifeRequestCallback: ImageKnifeRequestCallback) {
-    this.ImageKnifeOption = option
+    this.imageKnifeOption = option
     this.context = uIAbilityContext
     this.componentWidth = width
     this.componentHeight = height
diff --git a/library/src/main/ets/utils/DefaultJobQueue.ets b/library/src/main/ets/utils/DefaultJobQueue.ets
index c6aafe0..eecf735 100644
--- a/library/src/main/ets/utils/DefaultJobQueue.ets
+++ b/library/src/main/ets/utils/DefaultJobQueue.ets
@@ -27,9 +27,9 @@ export class DefaultJobQueue implements IJobQueue {
   }
 
   add(request: ImageKnifeRequest): void {
-    if (request.ImageKnifeOption.priority === undefined || request.ImageKnifeOption.priority === taskpool.Priority.MEDIUM) {
+    if (request.imageKnifeOption.priority === undefined || request.imageKnifeOption.priority === taskpool.Priority.MEDIUM) {
       this.normalQueue.add(request)
-    } else if (request.ImageKnifeOption.priority === taskpool.Priority.HIGH) {
+    } else if (request.imageKnifeOption.priority === taskpool.Priority.HIGH) {
       this.highQueue.add(request)
     } else {
       this.lowQueue.add(request)
diff --git a/library/src/main/ets/utils/FileCache.ets b/library/src/main/ets/utils/FileCache.ets
index f94205d..82c889b 100644
--- a/library/src/main/ets/utils/FileCache.ets
+++ b/library/src/main/ets/utils/FileCache.ets
@@ -31,7 +31,7 @@ export class FileCache {
   maxSize: number = 0
   path: string = ""
   private lruCache: util.LRUCache<string, number>
-  private isInited: boolean = false
+  static isInited: boolean = false
   private context?: Context
   readonly defaultMaxSize: number = 512;
   readonly defaultSize: number = 128;
@@ -57,7 +57,7 @@ export class FileCache {
    * 遍历缓存文件目录，初始化缓存
    */
   public async initFileCache() {
-    if (this.isInited) {
+    if (FileCache.isInited) {
       return
     }
 
@@ -100,7 +100,7 @@ export class FileCache {
     }
 
     this.trimToSize();
-    this.isInited = true
+    FileCache.isInited = true
   }
 
   // 添加缓存键值对,同时写文件
@@ -108,7 +108,7 @@ export class FileCache {
     if (key == null || value == null) {
       throw new Error('key or value is invalid ');
     }
-    if (!this.isInited) {
+    if (!FileCache.isInited) {
       return
     }
 
@@ -132,7 +132,7 @@ export class FileCache {
     if (key == null || value == null) {
       throw new Error('key or value is invalid ');
     }
-    if (!this.isInited) {
+    if (!FileCache.isInited) {
       return
     }
 
@@ -151,7 +151,7 @@ export class FileCache {
   }
 
   get(key: string): ArrayBuffer | undefined {
-    if (!this.isInited) {
+    if (!FileCache.isInited) {
       return
     }
 
@@ -167,7 +167,7 @@ export class FileCache {
     if (key == null) {
       throw new Error('key is null,checking the parameter');
     }
-    if (!this.isInited) {
+    if (!FileCache.isInited) {
       return
     }
 
@@ -179,10 +179,10 @@ export class FileCache {
   }
 
   async removeAll(): Promise<void> {
-    if (!this.isInited) {
+    if (!FileCache.isInited) {
       return
     }
-    this.isInited = false
+    FileCache.isInited = false
     this.lruCache.clear()
     this.currentMemory = 0;
 
@@ -191,7 +191,7 @@ export class FileCache {
       await FileUtils.getInstance().deleteFile(this.path + filenames[i])
     }
 
-    this.isInited = true
+    FileCache.isInited = true
   }
 
   size(): number {
@@ -199,7 +199,7 @@ export class FileCache {
   }
 
   // 移除较少使用的缓存数据
-  trimToSize(): void {
+  private trimToSize(): void {
     while (true) {
       if (this.currentMemory <= this.maxMemory || this.lruCache.isEmpty()) {
         break
@@ -242,6 +242,9 @@ export class FileCache {
    * @param value
    */
   static saveFileCacheOnlyFile(context: Context, key: string, value: ArrayBuffer): boolean {
+    if (!FileCache.isInited) {
+      return false
+    }
     // 写文件
     FileUtils.getInstance()
       .writeFileSync(context.cacheDir + FileUtils.SEPARATOR + FileCache.CACHE_FOLDER + FileUtils.SEPARATOR + key, value)