diff --git a/paddle/fluid/string/string_helper.h b/paddle/fluid/string/string_helper.h
index 4f1aee7c7ed17fd454e1965b7bc53a7d27a44a3f..c52b7a99a777a7eac714e6533101368e35844c21 100644
--- a/paddle/fluid/string/string_helper.h
+++ b/paddle/fluid/string/string_helper.h
@@ -193,6 +193,22 @@ std::string join_strings(const Container& strs, const std::string& delim) {
   return str;
 }
 
+template <class Container, class DelimT, class ConvertFunc>
+std::string join_strings(const Container& strs, DelimT&& delim,
+                         ConvertFunc&& func) {
+  std::stringstream ss;
+  size_t i = 0;
+  for (const auto& elem : strs) {
+    if (i > 0) {
+      ss << delim;
+    }
+    ss << func(elem);
+    ++i;
+  }
+
+  return ss.str();
+}
+
 // A helper class for reading lines from file. A line buffer is maintained. It
 // doesn't need to know the maximum possible length of a line.
 
diff --git a/paddle/fluid/string/string_helper_test.cc b/paddle/fluid/string/string_helper_test.cc
index 4796bf7507aba7f8afac06dc33f08c7025b33d4b..67456e16a93b67f39d86c5751e35148be7020f61 100644
--- a/paddle/fluid/string/string_helper_test.cc
+++ b/paddle/fluid/string/string_helper_test.cc
@@ -56,3 +56,10 @@ TEST(StringHelper, JoinStrings) {
   result = paddle::string::join_strings(v, " new ");
   EXPECT_EQ(result, "hello new world");
 }
+
+TEST(StringHelper, JoinStringsWithConversion) {
+  std::vector<int> v = {2, 3};
+  auto result =
+      paddle::string::join_strings(v, ",", [](int x) { return x * x; });
+  EXPECT_EQ(result, "4,9");
+}