It is not recommended to apply hot compresses every day for children with short penis. Usually, the use of hot compresses cannot promote the development of penis, but it can improve the blood circulation of the penis. Male penis development is mainly related to the level of androgen in the body, and the length and thickness of the penis are different at different ages. The use of hot compresses will promote local blood circulation and have no effect on development. In childhood, the penis will be shorter than in adulthood, and as we get older, the level of androgen in the body gradually increases; during puberty, due to the rapid increase in androgen, the penis will develop rapidly and reach sexual maturity. In addition, the appearance of the penis is short, may be related to their own obesity and other factors, obese children whose penis will be due to the ligament pulling and invagination, manifested as a penis shorter than children of the same age, which can be improved through weight loss or surgery.