diff --git a/main.go b/main.go
index bbff0bb..f8ccef6 100755
--- a/main.go
+++ b/main.go
@@ -13,6 +13,7 @@ import (
 	mqtt "github.com/eclipse/paho.mqtt.golang"
 	_ "github.com/go-sql-driver/mysql"
 	"github.com/google/uuid"
+	"github.com/shopspring/decimal"
 	"go_mqtt/models"
 	_ "go_mqtt/models"
 	"go_mqtt/mydb"
@@ -20,7 +21,6 @@ import (
 	"io/ioutil"
 	"log"
 	"os"
-	"strconv"
 	"strings"
 	"time"
 )
@@ -570,13 +570,13 @@ MIIEvgIBADANBgkqhkiG9w0BAQEFAASCBKgwggSkAgEAAoIBAQCYwvInDUICXbmWcOAR5hm86mz7WlKL
 		temperature.DataMinute = now.Format("2006-01-02 15:04")
 		//temperature.Humidity = result[0]
 		//temperature.Temperature = result[1]
-		// ParseFloat 返回 float64，需要显式转换为 float32
-		f1, err1 := strconv.ParseFloat(result[0], 32)
-		f2, err2 := strconv.ParseFloat(result[1], 32)
+		//字符串转decimal.Decimal
+		humidityValue, err1 := decimal.NewFromString(result[0])
+		temperatureValue, err2 := decimal.NewFromString(result[1])
 		if err1 == nil && err2 == nil {
-			// 转换为 float32
-			temperature.Humidity = float32(f1)
-			temperature.Temperature = float32(f2)
+			// decimal.Decimal
+			temperature.Humidity = humidityValue
+			temperature.Temperature = temperatureValue
 		}
 		temperature.Topic = topic
 		if topic == "WifiSHT/7C87CE9CA4E6/SHT20" {
diff --git a/models/Temperature.go b/models/Temperature.go
index dab9c88..3cdab73 100755
--- a/models/Temperature.go
+++ b/models/Temperature.go
@@ -2,6 +2,7 @@ package models
 
 import (
 	"fmt"
+	"github.com/shopspring/decimal"
 	"go_mqtt/mydb"
 	"time"
 )
@@ -9,13 +10,13 @@ import (
 type Temperature struct {
 	Id           int64 `gorm:"primaryKey;autoIncrement"`
 	CreateDate   time.Time
-	DataDate     string  `gorm:"index:idx_dataDate;index:data_date_location_desc;size:20"`
-	DataHour     string  `gorm:"index:idx_dataHour;size:20"`
-	DataMinute   string  `gorm:"index:idx_dataMinute;size:20"`
-	Humidity     float32 `gorm:"type:float8"`
-	LocationDesc string  `gorm:"index:idx_locationDesc;index:data_date_location_desc;size:80"`
-	Temperature  float32 `gorm:"type:float8"`
-	Topic        string  `gorm:"size:60"`
+	DataDate     string          `gorm:"index:idx_dataDate;index:data_date_location_desc;size:20"`
+	DataHour     string          `gorm:"index:idx_dataHour;size:20"`
+	DataMinute   string          `gorm:"index:idx_dataMinute;size:20"`
+	Humidity     decimal.Decimal `gorm:"type:decimal(4,1)"`
+	LocationDesc string          `gorm:"index:idx_locationDesc;index:data_date_location_desc;size:80"`
+	Temperature  decimal.Decimal `gorm:"type:decimal(4,1)"`
+	Topic        string          `gorm:"size:60"`
 }
 
 func init() {