diff --git a/pkg/filesystem/fsctx/stream.go b/pkg/filesystem/fsctx/stream.go
index 0f1fafd..0cba29e 100644
--- a/pkg/filesystem/fsctx/stream.go
+++ b/pkg/filesystem/fsctx/stream.go
@@ -19,7 +19,7 @@ const (
 type FileStream struct {
 	Mode         WriteMode
 	Hidden       bool
-	LastModified time.Time
+	LastModified *time.Time
 	Metadata     map[string]string
 	File         io.ReadCloser
 	Size         uint64
@@ -61,7 +61,7 @@ func (file *FileStream) GetMetadata() map[string]string {
 	return file.Metadata
 }
 
-func (file *FileStream) GetLastModified() time.Time {
+func (file *FileStream) GetLastModified() *time.Time {
 	return file.LastModified
 }
 
@@ -87,7 +87,7 @@ type FileHeader interface {
 	GetVirtualPath() string
 	GetMode() WriteMode
 	GetMetadata() map[string]string
-	GetLastModified() time.Time
+	GetLastModified() *time.Time
 	IsHidden() bool
 	GetSavePath() string
 	SetSize(uint64)
diff --git a/pkg/filesystem/upload.go b/pkg/filesystem/upload.go
index 3299819..e304651 100644
--- a/pkg/filesystem/upload.go
+++ b/pkg/filesystem/upload.go
@@ -149,7 +149,7 @@ func (fs *FileSystem) CancelUpload(ctx context.Context, path string, file fsctx.
 }
 
 // CreateUploadSession 创建上传会话
-func (fs *FileSystem) CreateUploadSession(ctx context.Context, path string, size uint64, name string) (*serializer.UploadCredential, error) {
+func (fs *FileSystem) CreateUploadSession(ctx context.Context, file *fsctx.FileStream) (*serializer.UploadCredential, error) {
 	// 获取相关有效期设置
 	credentialTTL := model.GetIntSetting("upload_credential_timeout", 3600)
 	callBackSessionTTL := model.GetIntSetting("upload_session_timeout", 86400)
@@ -157,16 +157,12 @@ func (fs *FileSystem) CreateUploadSession(ctx context.Context, path string, size
 	callbackKey := uuid.Must(uuid.NewV4()).String()
 
 	// 创建隐藏的文件，同时校验文件信息
-	file := &fsctx.FileStream{
-		Size:        size,
-		Name:        name,
-		VirtualPath: path,
-		Mode:        fsctx.Nop,
-		Hidden:      true,
-		Metadata: map[string]string{
-			UploadSessionMetaKey: callbackKey,
-		},
+	file.Mode = fsctx.Nop
+	file.Hidden = true
+	file.Metadata = map[string]string{
+		UploadSessionMetaKey: callbackKey,
 	}
+
 	fs.Use("BeforeUpload", HookValidateFile)
 	fs.Use("AfterUpload", HookClearFileHeaderSize)
 	fs.Use("AfterUpload", GenericAfterUpload)
@@ -175,14 +171,15 @@ func (fs *FileSystem) CreateUploadSession(ctx context.Context, path string, size
 	}
 
 	uploadSession := &serializer.UploadSession{
-		Key:         callbackKey,
-		UID:         fs.User.ID,
-		PolicyID:    fs.Policy.ID,
-		VirtualPath: path,
-		Name:        name,
-		Size:        size,
-		SavePath:    file.SavePath,
-		ChunkSize:   fs.Policy.OptionsSerialized.ChunkSize,
+		Key:          callbackKey,
+		UID:          fs.User.ID,
+		PolicyID:     fs.Policy.ID,
+		VirtualPath:  file.VirtualPath,
+		Name:         file.Name,
+		Size:         file.Size,
+		SavePath:     file.SavePath,
+		ChunkSize:    fs.Policy.OptionsSerialized.ChunkSize,
+		LastModified: file.GetLastModified(),
 	}
 
 	// 获取上传凭证
diff --git a/pkg/serializer/upload.go b/pkg/serializer/upload.go
index 2285410..87fd8e1 100644
--- a/pkg/serializer/upload.go
+++ b/pkg/serializer/upload.go
@@ -4,6 +4,7 @@ import (
 	"encoding/base64"
 	"encoding/gob"
 	"encoding/json"
+	"time"
 )
 
 // UploadPolicy slave模式下传递的上传策略
@@ -31,14 +32,15 @@ type UploadCredential struct {
 
 // UploadSession 上传会话
 type UploadSession struct {
-	Key         string
-	UID         uint
-	PolicyID    uint
-	VirtualPath string
-	Name        string
-	Size        uint64
-	SavePath    string
-	ChunkSize   uint64
+	Key          string // 上传会话 GUID
+	UID          uint   // 发起者
+	PolicyID     uint
+	VirtualPath  string     // 用户文件路径，不含文件名
+	Name         string     // 文件名
+	Size         uint64     // 文件大小
+	SavePath     string     // 物理存储路径，包含物理文件名
+	ChunkSize    uint64     // 分块大小，0 为部分快
+	LastModified *time.Time // 可选的文件最后修改日期
 }
 
 // UploadCallback 上传回调正文
diff --git a/routers/router.go b/routers/router.go
index df46588..dd64545 100644
--- a/routers/router.go
+++ b/routers/router.go
@@ -504,8 +504,6 @@ func InitMasterRouter() *gin.Engine {
 			// 文件
 			file := auth.Group("file", middleware.HashID(hashid.FileID))
 			{
-				// 文件上传
-				file.POST("upload", controllers.FileUploadStream)
 				// 创建上传会话
 				file.PUT("upload/session", controllers.GetUploadCredential)
 				// 更新文件
diff --git a/service/explorer/upload.go b/service/explorer/upload.go
index 04662b4..282a8cc 100644
--- a/service/explorer/upload.go
+++ b/service/explorer/upload.go
@@ -4,17 +4,20 @@ import (
 	"context"
 
 	"github.com/cloudreve/Cloudreve/v3/pkg/filesystem"
+	"github.com/cloudreve/Cloudreve/v3/pkg/filesystem/fsctx"
 	"github.com/cloudreve/Cloudreve/v3/pkg/hashid"
 	"github.com/cloudreve/Cloudreve/v3/pkg/serializer"
 	"github.com/gin-gonic/gin"
+	"time"
 )
 
 // UploadSessionService 获取上传凭证服务
 type UploadSessionService struct {
-	Path     string `json:"path" binding:"required"`
-	Size     uint64 `json:"size" binding:"min=0"`
-	Name     string `json:"name" binding:"required"`
-	PolicyID string `json:"policy_id" binding:"required"`
+	Path         string `json:"path" binding:"required"`
+	Size         uint64 `json:"size" binding:"min=0"`
+	Name         string `json:"name" binding:"required"`
+	PolicyID     string `json:"policy_id" binding:"required"`
+	LastModified int64  `json:"last_modified"`
 }
 
 // Create 创建新的上传会话
@@ -35,7 +38,16 @@ func (service *UploadSessionService) Create(ctx context.Context, c *gin.Context)
 		return serializer.Err(serializer.CodePolicyNotAllowed, "存储策略发生变化，请刷新文件列表并重新添加此任务", nil)
 	}
 
-	credential, err := fs.CreateUploadSession(ctx, service.Path, service.Size, service.Name)
+	file := &fsctx.FileStream{
+		Size:        service.Size,
+		Name:        service.Name,
+		VirtualPath: service.Path,
+	}
+	if service.LastModified > 0 {
+		lastModified := time.UnixMilli(service.LastModified)
+		file.LastModified = &lastModified
+	}
+	credential, err := fs.CreateUploadSession(ctx, file)
 	if err != nil {
 		return serializer.Err(serializer.CodeNotSet, err.Error(), err)
 	}