diff --git a/src/sclient/ScanEdgeIter.cpp b/src/sclient/ScanEdgeIter.cpp
index 134087c6..a8b0ee53 100644
--- a/src/sclient/ScanEdgeIter.cpp
+++ b/src/sclient/ScanEdgeIter.cpp
@@ -20,12 +20,15 @@ bool ScanEdgeIter::hasNext() { return hasNext_; }
 ScanEdgeIter::~ScanEdgeIter() { delete req_; }
 
 DataSet ScanEdgeIter::next() {
-  if (!hasNext_) {
+  if (!hasNext()) {
     LOG(ERROR) << "hasNext() == false !";
     return DataSet();
   }
   DCHECK(!!req_);
-  req_->set_cursor(std::move(nextCursor_));
+  auto partCursorMapReq = req_->get_parts();
+  DCHECK_EQ(partCursorMapReq.size(), 1);
+  partCursorMapReq.begin()->second.set_next_cursor(nextCursor_);
+  req_->set_parts(partCursorMapReq);
   auto r = client_->doScanEdge(*req_);
   if (!r.first) {
     LOG(ERROR) << "Scan edge failed";
@@ -39,11 +42,14 @@ DataSet ScanEdgeIter::next() {
     this->hasNext_ = false;
     return DataSet();
   }
-  this->hasNext_ = scanResponse.get_has_next();
-  std::string* cursor = scanResponse.get_next_cursor();
-  if (cursor) {
-    this->nextCursor_ = *cursor;
-  }
+  auto partCursorMapResp = scanResponse.get_cursors();
+  DCHECK_EQ(partCursorMapResp.size(), 1);
+  auto scanCursor = partCursorMapResp.begin()->second;
+  hasNext_ = scanCursor.get_has_next();
+  LOG(INFO) << "hasNext: " << hasNext_;
+  nextCursor_ = *scanCursor.get_next_cursor();
+  LOG(INFO) << "nextCursor_: " << nextCursor_;
+
   return scanResponse.get_edge_data();
 }
 
diff --git a/src/sclient/StorageClient.cpp b/src/sclient/StorageClient.cpp
index 51df1a83..33e5654f 100644
--- a/src/sclient/StorageClient.cpp
+++ b/src/sclient/StorageClient.cpp
@@ -63,9 +63,14 @@ ScanEdgeIter StorageClient::scanEdgeWithPart(std::string spaceName,
 
   auto* req = new storage::cpp2::ScanEdgeRequest;
   req->set_space_id(spaceId);
-  // req->set_parts(std::unordered_map<PartitionID, storage::cpp2::ScanCursor>{{partId, ""}});
-  req->set_part_id(partId);
-  req->set_cursor("");
+  // old interface
+  // req->set_part_id(partId);
+  // req->set_cursor("");
+  // new interface
+  storage::cpp2::ScanCursor scanCursor;
+  scanCursor.set_next_cursor("");
+  req->set_parts(std::unordered_map<PartitionID, storage::cpp2::ScanCursor>{
+      {partId, scanCursor}});
   req->set_return_columns(returnCols);
   req->set_limit(limit);
   req->set_start_time(startTime);
@@ -80,7 +85,10 @@ ScanEdgeIter StorageClient::scanEdgeWithPart(std::string spaceName,
 std::pair<bool, storage::cpp2::ScanEdgeResponse> StorageClient::doScanEdge(
     const storage::cpp2::ScanEdgeRequest& req) {
   std::pair<HostAddr, storage::cpp2::ScanEdgeRequest> request;
-  auto host = mClient_->getPartLeaderFromCache(req.get_space_id(), req.get_part_id());
+  auto partCursorMap = req.get_parts();
+  DCHECK_EQ(partCursorMap.size(), 1);
+  PartitionID partId = partCursorMap.begin()->first;
+  auto host = mClient_->getPartLeaderFromCache(req.get_space_id(), partId);
   if (!host.first) {
     return {false, storage::cpp2::ScanEdgeResponse()};
   }