diff --git a/lib/src/Utilities.cc b/lib/src/Utilities.cc
index b27583dc..8e8b21a7 100755
--- a/lib/src/Utilities.cc
+++ b/lib/src/Utilities.cc
@@ -443,8 +443,8 @@ std::string urlDecode(const char *begin, const char *end)
                 if (!((hex >= 48 && hex <= 57) ||  //0-9
                       (hex >= 97 && hex <= 122) || //a-z
                       (hex >= 65 && hex <= 90) ||  //A-Z
-                      //一些特殊符号及保留字[$-_.+!*'(),]  [$&+,/:;=?@]
-                      hex == 0x21 || hex == 0x24 || hex == 0x26 || hex == 0x27 || hex == 0x28 || hex == 0x29 || hex == 0x2a || hex == 0x2b || hex == 0x2c || hex == 0x2d || hex == 0x2e || hex == 0x2f || hex == 0x3A || hex == 0x3B || hex == 0x3D || hex == 0x3f || hex == 0x40 || hex == 0x5f))
+                      //一些特殊符号及保留字[$-_.+!*'(),]  [$&+,/:;?@]
+                      hex == 0x21 || hex == 0x24 || hex == 0x26 || hex == 0x27 || hex == 0x28 || hex == 0x29 || hex == 0x2a || hex == 0x2b || hex == 0x2c || hex == 0x2d || hex == 0x2e || hex == 0x2f || hex == 0x3A || hex == 0x3B || hex == 0x3f || hex == 0x40 || hex == 0x5f))
                 {
                     result += char(hex);
                     i += 2;
diff --git a/lib/tests/UrlCodecTest.cc b/lib/tests/UrlCodecTest.cc
index dbff3633..89cc3332 100644
--- a/lib/tests/UrlCodecTest.cc
+++ b/lib/tests/UrlCodecTest.cc
@@ -8,6 +8,7 @@ int main()
     std::cout << output << std::endl;
     auto output2 = drogon::urlDecode(output);
     std::cout << output2 << std::endl;
-    std::cout << drogon::urlDecode("k2%3D%E5%AE%89&k1%3D1");
+    std::cout << drogon::urlEncode("k2=安&k1=1") << std::endl;
+    std::cout << drogon::urlDecode("k2%3D%E5%AE%89&k1%3D1") << std::endl;
     return 0;
 }
\ No newline at end of file