At present, there is no particularly safe and effective way to grow the penis. For adolescent males, penis development can be promoted through enhanced nutrition and exercise; for adult males, penis growth can be achieved through surgery. 1. Adolescent males: Adolescent males can continue to develop their penises. In their daily lives, they should take a balanced diet and avoid picky eating; actively participate in physical exercise, such as jogging, swimming, etc., which can promote the metabolism as well as hormone secretion; and maintain a good work and rest schedule and avoid staying up all night. Such measures can promote the growth and development of the body, and thus promote the development of the penis. 2. Adult men: the penis does not have the possibility of secondary development, there is a short penis, can consider taking the penis extension surgery and other surgical methods of treatment. This type of surgery carries certain risks and should be applied with caution. It is important to note that this surgery only improves the appearance of the penis. Both adolescent and adult males should pay attention to the presence of a short penis and seek medical treatment as soon as possible.