diff --git a/kernel/api/repo.go b/kernel/api/repo.go
index 60927e0fc..4eeec19a0 100644
--- a/kernel/api/repo.go
+++ b/kernel/api/repo.go
@@ -26,6 +26,31 @@ import (
 	"github.com/siyuan-note/siyuan/kernel/util"
 )
 
+func diffRepoSnapshots(c *gin.Context) {
+	ret := gulu.Ret.NewResult()
+	defer c.JSON(http.StatusOK, ret)
+
+	arg, ok := util.JsonArg(c, ret)
+	if !ok {
+		return
+	}
+
+	left := arg["left"].(string)
+	right := arg["right"].(string)
+	adds, updates, removes, err := model.DiffRepoSnapshots(left, right)
+	if nil != err {
+		ret.Code = -1
+		ret.Msg = err.Error()
+		return
+	}
+
+	ret.Data = map[string]interface{}{
+		"adds":    adds,
+		"updates": updates,
+		"removes": removes,
+	}
+}
+
 func getCloudSpace(c *gin.Context) {
 	ret := gulu.Ret.NewResult()
 	defer c.JSON(http.StatusOK, ret)
diff --git a/kernel/api/router.go b/kernel/api/router.go
index 9f44b8f24..e87d6364f 100644
--- a/kernel/api/router.go
+++ b/kernel/api/router.go
@@ -297,6 +297,7 @@ func ServeAPI(ginServer *gin.Engine) {
 	ginServer.Handle("POST", "/api/repo/removeCloudRepoTagSnapshot", model.CheckAuth, removeCloudRepoTagSnapshot)
 	ginServer.Handle("POST", "/api/repo/uploadCloudSnapshot", model.CheckAuth, uploadCloudSnapshot)
 	ginServer.Handle("POST", "/api/repo/downloadCloudSnapshot", model.CheckAuth, downloadCloudSnapshot)
+	ginServer.Handle("POST", "/api/repo/diffRepoSnapshots", model.CheckAuth, diffRepoSnapshots)
 
 	ginServer.Handle("POST", "/api/notification/pushMsg", model.CheckAuth, pushMsg)
 	ginServer.Handle("POST", "/api/notification/pushErrMsg", model.CheckAuth, pushErrMsg)
diff --git a/kernel/model/repository.go b/kernel/model/repository.go
index 4a6b375c1..2cbb93024 100644
--- a/kernel/model/repository.go
+++ b/kernel/model/repository.go
@@ -64,6 +64,30 @@ type TypeCount struct {
 	Count int    `json:"count"`
 }
 
+func DiffRepoSnapshots(left, right string) (adds, updates, removes []*entity.File, err error) {
+	if 1 > len(Conf.Repo.Key) {
+		err = errors.New(Conf.Language(26))
+		return
+	}
+
+	repo, err := newRepository()
+	if nil != err {
+		return
+	}
+
+	leftIndex, err := repo.GetIndex(left)
+	if nil != err {
+		return
+	}
+	rightIndex, err := repo.GetIndex(right)
+	if nil != err {
+		return
+	}
+
+	adds, updates, removes, err = repo.DiffIndex(leftIndex, rightIndex)
+	return
+}
+
 func GetRepoSnapshots(page int) (ret []*Snapshot, pageCount, totalCount int, err error) {
 	ret = []*Snapshot{}
 	if 1 > len(Conf.Repo.Key) {