diff --git a/deps/oblib/src/lib/charset/ob_dtoa.cc b/deps/oblib/src/lib/charset/ob_dtoa.cc
index 3233d0d63..a054bd085 100644
--- a/deps/oblib/src/lib/charset/ob_dtoa.cc
+++ b/deps/oblib/src/lib/charset/ob_dtoa.cc
@@ -388,60 +388,73 @@ inline bool is_whitespace(const char& c) {
   return c == ' ' || c == '\t' || c == '\n' || c == '\v' || c == '\f' || c == '\r';
 }
 
+static std::errc ob_fast_strtod(const char *str, char **end, double *result)
+{
+  std::errc ret = std::errc();
+  if (!(NULL != result
+        && end != NULL
+        && ((str != NULL && *end != NULL) || (str == NULL && *end == NULL)))) {
+    ret = std::errc::invalid_argument;
+  } else {
+    *result = 0.0;
+    int len = *end - str;
+    // skip leading and back spaces
+    int i = 0;
+    for (; i < len; ++i) {
+      if (!is_whitespace(str[i])) {
+        break;
+      }
+    }
+    if (i >= len || (i == len-1 && ('+' == str[i] || '-' == str[i]))) {
+      *end = (char *)str;
+    } else {
+      int j = len - 1;
+      for (; j >= i; j--) {
+        if (!is_whitespace(str[j])) {
+          break;
+        }
+      }
+      fast_float::from_chars_result ff_ret = fast_float::from_chars(str + i, str + j + 1, *result);
+      if (ff_ret.ec == std::errc()) {
+        *end = const_cast<char *>(ff_ret.ptr);
+        if (__builtin_isnan(*result) || __builtin_isinf(*result) || __builtin_isinf(-*result)) {
+          *end = (char *)str;
+          *result = 0.0;
+        }
+      } else {
+        ret = ff_ret.ec;
+      }
+    }
+  }
+
+  return ret;
+}
+
 double ob_strtod(const char *str, char **end, int *error)
 {
-  char buf[DTOA_BUF_MAX_SIZE];
   double res = 0.0;
-  if (!(end != NULL && ((str != NULL && *end != NULL) ||
-                              (str == NULL && *end == NULL)) &&
-              error != NULL)) {
-    return 0.0;
-  }
-  int len = *end - str;
-  // skip leading and back spaces
-  int i = 0;
-  for (; i < len; ++i) {
-      if (!is_whitespace(str[i])) {
-          break;
-      }
-  }
-  if (i >= len || (i == len-1 && ('+' == str[i] || '-' == str[i]))) {
-    *end = (char *)str;
-  } else {
-    int j = len - 1;
-    for (; j >= i; j--) {
-        if (!is_whitespace(str[j])) {
-            break;
-        }
-    }
-    // The fast_float::from_chars function cannot handle leading '+' signs.
-    // For example, ObXmlUtil::to_number() might include a '+' for extract_xml expression.
-    if (i < len && '+' == str[i]) {
-        i ++;
-    }
-    fast_float::from_chars_result ret = fast_float::from_chars(str + i, str + j + 1, res);
-    *end = const_cast<char *>(ret.ptr);
-    if (ret.ec == std::errc::result_out_of_range) {
-      res= ob_strtod_int(str, end, error, buf, sizeof(buf));
+  if (std::errc() != ob_fast_strtod(str, end, &res)) {
+    //rollback to call ob_strtod_int if failed to call fast strtod
+    if (!(end != NULL
+          && ((str != NULL && *end != NULL) || (str == NULL && *end == NULL))
+          && error != NULL)) {
+      // do nothing
+    } else {
+      char buf[DTOA_BUF_MAX_SIZE];
+      res = ob_strtod_int(str, end, error, buf, sizeof(buf));
       if (*error != 0) {
         res = (res < 0 ? -DBL_MAX : DBL_MAX);
       }
-      // *error = EOVERFLOW;
-      // res = (res < 0 ? -DBL_MAX : DBL_MAX);
-    }
-    if (__builtin_isnan(res) || __builtin_isinf(res) || __builtin_isinf(-res)) {
-      *end = (char *)str;
-      res = 0.0;
     }
   }
+
   return res;
 }
 
-
 double ob_atof(const char *nptr)
 {
   int error;
-  const char *end= nptr+65535;               
+  const char *end= nptr+65535;
   return (ob_strtod(nptr, (char**) &end, &error));
 }
 
diff --git a/tools/deploy/mysql_test/test_suite/static_engine/r/mysql/explicit_cast.result b/tools/deploy/mysql_test/test_suite/static_engine/r/mysql/explicit_cast.result
index f79722115..dae7cfa35 100644
--- a/tools/deploy/mysql_test/test_suite/static_engine/r/mysql/explicit_cast.result
+++ b/tools/deploy/mysql_test/test_suite/static_engine/r/mysql/explicit_cast.result
@@ -664,4 +664,19 @@ select cast(a as double) from t1;
 |                       0 |
 |                      -0 |
 +-------------------------+
+select cast('+-4' as double) from dual;
++-----------------------+
+| cast('+-4' as double) |
++-----------------------+
+|                     0 |
++-----------------------+
+Warnings:
+Warning	1292	Truncated incorrect DOUBLE value: '+-4'
+select cast('+4' as double) from dual;
++----------------------+
+| cast('+4' as double) |
++----------------------+
+|                    4 |
++----------------------+
+
 drop table t1;
diff --git a/tools/deploy/mysql_test/test_suite/static_engine/t/explicit_cast.test b/tools/deploy/mysql_test/test_suite/static_engine/t/explicit_cast.test
index 0bf985bdb..8559bf554 100644
--- a/tools/deploy/mysql_test/test_suite/static_engine/t/explicit_cast.test
+++ b/tools/deploy/mysql_test/test_suite/static_engine/t/explicit_cast.test
@@ -178,4 +178,7 @@ select cast(a as float) from t1;
 select cast(a as double) from t1;
 --enable_warnings
 
+select cast('+-4' as double) from dual;
+select cast('+4' as double) from dual;
+
 drop table t1;