diff --git a/src/util/inc/tconfig.h b/src/util/inc/tconfig.h
index a61381b31b498ae770264b488bf6fbc28d4e9407..89f204dd77fb3d14af358b82e8078ccccfaf6cb6 100644
--- a/src/util/inc/tconfig.h
+++ b/src/util/inc/tconfig.h
@@ -32,8 +32,8 @@ extern "C" {
 #define TSDB_CFG_CTYPE_B_OPTION    16U  // can be configured by taos_options function
 #define TSDB_CFG_CTYPE_B_NOT_PRINT 32U  // such as password
 
-#define MAXFLOAT    1E+20
-#define MINFLOAT   -1E+20
+#define MAXFLOAT    100000
+#define MINFLOAT   -100000
 
 enum {
   TAOS_CFG_CSTATUS_NONE,     // not configured