diff --git a/en/option/series/sankey.md b/en/option/series/sankey.md
index 2324c00e..6a1ab8ce 100644
--- a/en/option/series/sankey.md
+++ b/en/option/series/sankey.md
@@ -277,7 +277,11 @@ data: [{
 
 ### name(string)
 
-The name of the node.
+The name of the node. The name can be displayed and can be used as id if id is not provided
+
+### id(string)
+
+The unique id of the node.
 
 ### value(number)