diff --git a/paddle/operators/clip_op.cc b/paddle/operators/clip_op.cc
index 3e9066ceb2a4a4dc19fdf5ef02bb7fadaab4bfff..4ddf24dea3363432988ae5460bb7b092501ca021 100644
--- a/paddle/operators/clip_op.cc
+++ b/paddle/operators/clip_op.cc
@@ -52,7 +52,11 @@ class ClipOpMaker : public framework::OpProtoAndCheckerMaker {
 Clip Operator.
 
 The clip operator limits the value of given input within an interval. The interval is
-specified with arguments 'min' and 'max'.
+specified with arguments 'min' and 'max':
+
+$$
+Out = \min(\max(X, min), max)
+$$
 
 )DOC");
   }