diff --git a/README.md b/README.md
index 066107b8f..1934b4b5c 100644
--- a/README.md
+++ b/README.md
@@ -71,6 +71,7 @@ var list=db.Queryable<Test>()
             .ThenInclude(z1 => z1.RoomList)  
             .Include(z1 => z1.Books) 
             .ExecuteCommand(); 
+            
 //delete by nav               
  db.DeleteNav<Student>(it=>it.Id==1) 
             .Include(z1 => z1.SchoolA)