Mr. Ping is designed to improve the safety problem of choking milk or inhaling a large amount of air due to improper feeding angle and bottle angle when sucking milk by installing an adjustable rotating shaft body in the center of bottle body and suction nozzle. Through the free rotation of the rotating shaft and the indication of the upper two-stage balance instrument, the milk sucking person can easily adjust the milk feeding angle to make the angle between the liquid in the bottle and the baby form a good flow angle.