diff --git a/docs/design_docs/proxy.md b/docs/design_docs/proxy.md
index 604fe9aedd..84d6b87032 100644
--- a/docs/design_docs/proxy.md
+++ b/docs/design_docs/proxy.md
@@ -155,7 +155,7 @@ allocation logic of segment ID is the responsibility of the Data Coordinator. Th
 written needs to be determined before writing to DmChannel. For a write operation, the proxy will hash each row of data
 again according to the hash value of its primary key, and then determine into which DmChannel each row of data enters. After
 collecting the number of pieces to be written by each DmChannel, apply to the data coordinator for which SegmentIDs the
-newly written data of these dmchannels belong. In the specific implementation, the proxy need to preallocate some
+newly written data of these dmchannels belong. In the specific implementation, the proxy needs to preallocate some
 quotas to the Data Coordinator to avoid frequent direct GRPC communication with the Data Coordinator.
 
 One consideration for uniformly assigning SegmentIDs by Data Coordinator is that Data Coordinator is responsible for