diff --git a/src/main/java/com/imyeyu/api/modules/common/bean/TempFileMetaData.java b/src/main/java/com/imyeyu/api/modules/common/bean/TempFileMetaData.java
index ffde520..4f44ef0 100644
--- a/src/main/java/com/imyeyu/api/modules/common/bean/TempFileMetaData.java
+++ b/src/main/java/com/imyeyu/api/modules/common/bean/TempFileMetaData.java
@@ -20,4 +20,7 @@ public class TempFileMetaData {
 	private Path path;
 
 	private Long lastAccessAt;
+
+	/** 缓存时长（毫秒） */
+	private Long ttl;
 }
diff --git a/src/main/java/com/imyeyu/api/modules/common/controller/CommonController.java b/src/main/java/com/imyeyu/api/modules/common/controller/CommonController.java
index 56ea98c..e0bbfbf 100644
--- a/src/main/java/com/imyeyu/api/modules/common/controller/CommonController.java
+++ b/src/main/java/com/imyeyu/api/modules/common/controller/CommonController.java
@@ -380,13 +380,14 @@ public class CommonController {
 	/**
 	 * 上传临时文件
 	 *
-	 * @param files
-	 * @return
+	 * @param files 文件列表
+	 * @param ttl   缓存时长（毫秒），最长 3 天（259200000ms）
+	 * @return 临时文件响应列表
 	 */
 	@AOPLog
 	@PostMapping("/temp/file/upload")
-	public List<TempFileResponse> uploadFile(@RequestParam("file") List<MultipartFile> files) {
-		return tempFileService.store(files);
+	public List<TempFileResponse> tempFileUpload(@RequestParam("file") List<MultipartFile> files, @RequestParam("ttl") Long ttl) {
+		return tempFileService.store(files, ttl);
 	}
 
 	/**
diff --git a/src/main/java/com/imyeyu/api/modules/common/service/TempFileService.java b/src/main/java/com/imyeyu/api/modules/common/service/TempFileService.java
index bcac81d..22c3590 100644
--- a/src/main/java/com/imyeyu/api/modules/common/service/TempFileService.java
+++ b/src/main/java/com/imyeyu/api/modules/common/service/TempFileService.java
@@ -15,7 +15,7 @@ import java.util.List;
  */
 public interface TempFileService {
 
-	List<TempFileResponse> store(List<MultipartFile> files) throws TimiException;
+	List<TempFileResponse> store(List<MultipartFile> files, Long ttl) throws TimiException;
 
 	File get(String id) throws TimiException;
 
diff --git a/src/main/java/com/imyeyu/api/modules/common/service/implement/TempFileServiceImplement.java b/src/main/java/com/imyeyu/api/modules/common/service/implement/TempFileServiceImplement.java
index f9ddfd2..3c8ce16 100644
--- a/src/main/java/com/imyeyu/api/modules/common/service/implement/TempFileServiceImplement.java
+++ b/src/main/java/com/imyeyu/api/modules/common/service/implement/TempFileServiceImplement.java
@@ -43,7 +43,8 @@ import java.util.concurrent.ConcurrentHashMap;
 @RequiredArgsConstructor
 public class TempFileServiceImplement implements TempFileService {
 
-	private static final Long TTL = Time.H * 6;
+	private static final Long DEFAULT_TTL = Time.H * 6;
+	private static final Long MAX_TTL = Time.D * 3;
 	private static final Long LIMIT = IOSize.GB * 10;
 
 	private final SettingService settingService;
@@ -61,7 +62,10 @@ public class TempFileServiceImplement implements TempFileService {
 		Files.createDirectories(storagePath);
 	}
 
-	public List<TempFileResponse> store(List<MultipartFile> files) throws TimiException {
+	public List<TempFileResponse> store(List<MultipartFile> files, Long ttl) throws TimiException {
+		ttl = TimiJava.firstNotNull(ttl, DEFAULT_TTL);
+		TimiException.requiredTrue(0 < ttl && ttl <= MAX_TTL, "ttl must be between 1ms and 3 days(259200000ms)");
+
 		long newFileSize = files.stream().mapToLong(MultipartFile::getSize).sum();
 		long currentUsage = usageMap.getOrDefault(TimiSpring.getRequestIP(), 0L);
 		TimiException.requiredTrue(currentUsage + newFileSize < LIMIT, "out of storage limit(10 GB)");
@@ -86,11 +90,12 @@ public class TempFileServiceImplement implements TempFileService {
 				metadata.setName(fileName);
 				metadata.setOriginalName(file.getOriginalFilename());
 				metadata.setLastAccessAt(Time.now());
+				metadata.setTtl(ttl);
 				metadataMap.put(metadata.getId(), metadata);
 
 				TempFileResponse resp = new TempFileResponse();
 				resp.setId(metadata.getId());
-				resp.setExpireAt(metadata.getLastAccessAt() + TTL);
+				resp.setExpireAt(metadata.getLastAccessAt() + ttl);
 
 				usageMap.put(TimiSpring.getRequestIP(), currentUsage + newFileSize);
 				result.add(resp);
@@ -128,7 +133,7 @@ public class TempFileServiceImplement implements TempFileService {
 	public void cleanup() {
 		List<String> expiredIds = metadataMap.values()
 		                                     .stream()
-		                                     .filter(metadata -> metadata.getLastAccessAt() + TTL < Time.now())
+		                                     .filter(metadata -> metadata.getLastAccessAt() + metadata.getTtl() < Time.now())
 		                                     .map(TempFileMetaData::getId)
 		                                     .toList();
 		for (int i = 0; i < expiredIds.size(); i++) {