diff --git a/deploy/cpp_infer/src/config.cpp b/deploy/cpp_infer/src/config.cpp
index a0ac1d08c93d1ff1e51f769465b2df2b4355fbc0..e55d178b57c9acfea862adb9e648364d7dd86a58 100644
--- a/deploy/cpp_infer/src/config.cpp
+++ b/deploy/cpp_infer/src/config.cpp
@@ -21,10 +21,12 @@ std::vector<std::string> OCRConfig::split(const std::string &str,
   std::vector<std::string> res;
   if ("" == str)
     return res;
-  char strs[str.length() + 1];
+  int strlen = str.length() + 1;
+  char *strs = new char[strlen];
   std::strcpy(strs, str.c_str());
 
-  char d[delim.length() + 1];
+  int delimlen = delim.length() + 1;
+  char *d = new char[delimlen];
   std::strcpy(d, delim.c_str());
 
   char *p = std::strtok(strs, d);
@@ -34,6 +36,8 @@ std::vector<std::string> OCRConfig::split(const std::string &str,
     p = std::strtok(NULL, d);
   }
 
+  delete[] strs;
+  delete[] d;
   return res;
 }