diff --git a/25_cputemp/main.go b/25_cputemp/main.go
new file mode 100644
index 0000000..bb1b25b
--- /dev/null
+++ b/25_cputemp/main.go
@@ -0,0 +1,53 @@
+package main
+
+import (
+	"fmt"
+	"image/color"
+	"machine"
+	"time"
+
+	"tinygo.org/x/drivers"
+	"tinygo.org/x/drivers/ssd1306"
+	"tinygo.org/x/tinyfont"
+	"tinygo.org/x/tinyfont/shnm"
+)
+
+var (
+	white = color.RGBA{R: 0xFF, G: 0xFF, B: 0xFF, A: 0xFF}
+	black = color.RGBA{R: 0x00, G: 0x00, B: 0x00, A: 0xFF}
+)
+
+type celsius float32
+
+func (c celsius) String() string {
+	return fmt.Sprintf("温度:%4.1f℃", c)
+}
+
+func main() {
+
+	machine.I2C0.Configure(machine.I2CConfig{
+		Frequency: 2.8 * machine.MHz,
+		SDA:       machine.GPIO12,
+		SCL:       machine.GPIO13,
+	})
+
+	display := ssd1306.NewI2C(machine.I2C0)
+	display.Configure(ssd1306.Config{
+		Address: 0x3C,
+		Width:   128,
+		Height:  64,
+	})
+	display.SetRotation(drivers.Rotation180)
+	display.ClearDisplay()
+	time.Sleep(50 * time.Millisecond)
+
+	for {
+		temp := celsius(float32(machine.ReadTemperature()) / 1000)
+		println(temp.String())
+
+		display.ClearBuffer()
+		tinyfont.WriteLine(display, &shnm.Shnmk12, 5, 10, temp.String(), white)
+		display.Display()
+		time.Sleep(time.Second)
+	}
+}
diff --git a/Makefile b/Makefile
index 67d91f5..867a1e3 100644
--- a/Makefile
+++ b/Makefile
@@ -27,4 +27,5 @@ smoketest:
 	tinygo build -o ./out/22_buzzer.uf2             --target waveshare-rp2040-zero --size short ./22_buzzer
 	tinygo build -o ./out/23_akatonbo.uf2           --target waveshare-rp2040-zero --size short ./23_akatonbo
 	tinygo build -o ./out/24_sht40.uf2              --target waveshare-rp2040-zero --size short ./24_sht40
+	tinygo build -o ./out/25_cputemp.uf2            --target waveshare-rp2040-zero --size short ./25_cputemp
 	tinygo build -o ./out/80_checker.uf2            --target waveshare-rp2040-zero --size short ./80_checker