diff --git a/br/pkg/pdutil/pd.go b/br/pkg/pdutil/pd.go
index 3ddd3155cc7b9..d7921d4c7bf7e 100644
--- a/br/pkg/pdutil/pd.go
+++ b/br/pkg/pdutil/pd.go
@@ -237,7 +237,9 @@ func NewPdController(
 	pdClient, err := pd.NewClientWithContext(
 		ctx, addrs, securityOption,
 		pd.WithGRPCDialOptions(maxCallMsgSize...),
-		pd.WithCustomTimeoutOption(10*time.Second),
+		// If the time too short, we may scatter a region many times, because
+		// the interface `ScatterRegions` may time out.
+		pd.WithCustomTimeoutOption(60*time.Second),
 		pd.WithMaxErrorRetry(3),
 	)
 	if err != nil {
diff --git a/br/pkg/restore/split.go b/br/pkg/restore/split.go
index 4a38c5348d087..61bb70a5d0031 100644
--- a/br/pkg/restore/split.go
+++ b/br/pkg/restore/split.go
@@ -387,6 +387,9 @@ func (rs *RegionSplitter) ScatterRegions(ctx context.Context, newRegions []*Regi
 				})
 			return nil
 		}
+		if err != nil {
+			log.Warn("scatter region meet error", logutil.ShortError(err))
+		}
 		return err
 		// the retry is for the temporary network errors during sending request.
 	}, &exponentialBackoffer{attempt: 3, baseBackoff: 500 * time.Millisecond})
diff --git a/br/pkg/restore/split_client.go b/br/pkg/restore/split_client.go
index 0b3037e3c9749..3364a27244fbc 100755
--- a/br/pkg/restore/split_client.go
+++ b/br/pkg/restore/split_client.go
@@ -126,6 +126,9 @@ func (c *pdClient) ScatterRegions(ctx context.Context, regionInfo []*RegionInfo)
 	regionsID := make([]uint64, 0, len(regionInfo))
 	for _, v := range regionInfo {
 		regionsID = append(regionsID, v.Region.Id)
+		log.Debug("scattering regions", logutil.Key("start", v.Region.StartKey),
+			logutil.Key("end", v.Region.EndKey),
+			zap.Uint64("id", v.Region.Id))
 	}
 	resp, err := c.client.ScatterRegions(ctx, regionsID)
 	if err != nil {