diff --git a/package.json b/package.json
index 13b0d69..c457b1e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@kevisual/oss",
-  "version": "0.0.19",
+  "version": "0.0.20",
   "main": "dist/index.js",
   "scripts": {
     "build": "bun run bun.config.ts"
diff --git a/src/s3/copy-object.ts b/src/s3/copy-object.ts
index 0f8c8e1..0ae419d 100644
--- a/src/s3/copy-object.ts
+++ b/src/s3/copy-object.ts
@@ -27,9 +27,10 @@ export const copyObject = async ({ bucketName, newMetadata, objectName, client }
   const { standardHeaders, customMetadata } = extractStandardHeaders(mergedMeta);
 
   // 执行复制操作（同一对象，用于更新元数据）
+  // 注意：CopySource 中的 key 必须进行 URL 编码，否则包含特殊字符时会报错
   const copyCommand = new CopyObjectCommand({
     Bucket: bucketName,
-    CopySource: `${bucketName}/${objectName}`,
+    CopySource: `${bucketName}/${encodeURIComponent(objectName)}`,
     Key: objectName,
     ContentType: standardHeaders.ContentType,
     CacheControl: standardHeaders.CacheControl,
diff --git a/src/s3/core.ts b/src/s3/core.ts
index 6bdb709..5e66571 100644
--- a/src/s3/core.ts
+++ b/src/s3/core.ts
@@ -420,7 +420,7 @@ export class OssBase implements OssBaseOperation {
   async copyObject(sourceObject: string, targetObject: string): Promise<any> {
     const command = new CopyObjectCommand({
       Bucket: this.bucketName,
-      CopySource: `${this.bucketName}/${this.prefix}${sourceObject}`,
+      CopySource: `${this.bucketName}/${encodeURIComponent(this.prefix + sourceObject)}`,
       Key: `${this.prefix}${targetObject}`,
     });
     const response = await this.client.send(command);
@@ -443,7 +443,7 @@ export class OssBase implements OssBaseOperation {
 
     const command = new CopyObjectCommand({
       Bucket: this.bucketName,
-      CopySource: `${this.bucketName}/${key}`,
+      CopySource: `${this.bucketName}/${encodeURIComponent(key)}`,
       Key: key,
       ContentType: standardHeaders.ContentType,
       CacheControl: standardHeaders.CacheControl,