diff --git a/g/util/gconv/gconv.go b/g/util/gconv/gconv.go
index a59d01780..eaad03ecc 100644
--- a/g/util/gconv/gconv.go
+++ b/g/util/gconv/gconv.go
@@ -229,7 +229,7 @@ func Float64 (i interface{}) float64 {
     if v, ok := i.(float64); ok {
         return v
     }
-    v, _ := strconv.ParseFloat(String(i), 32)
+    v, _ := strconv.ParseFloat(String(i), 64)
     return v
 }
 
diff --git a/geg/other/test.go b/geg/other/test.go
index fbf96d50a..5aa12c1dc 100644
--- a/geg/other/test.go
+++ b/geg/other/test.go
@@ -1,11 +1,12 @@
 package main
 
 import (
-    "gitee.com/johng/gf/g/util/gconv"
-    "math"
     "fmt"
+    "math/rand"
 )
 
 func main() {
-    fmt.Println(gconv.String(uint(math.MaxUint64)))
+    for i := 0; i < 100; i++ {
+        fmt.Println(rand.Intn(200))
+    }
 }
\ No newline at end of file