In the pre-pubertal development period when androgen secretion is insufficient can use hormone drugs to promote penis enlargement, if has passed puberty, and no drugs to make penis enlargement. 1. Before puberty: in the pre-puberty androgen secretion insufficient time, if the penis is relatively short, you can use testosterone undecanoate, gonadotropin and other drugs to promote the development of the penis. 2. After puberty: after puberty, the penis will no longer develop, at this time there is no drug can promote penis enlargement, if the penis is short is more serious, can not complete a satisfactory sex life, you can through the surgical method to make the penis enlargement, mainly penis enlargement surgery. To promote penile development, should be in puberty to strengthen the nutrition, appropriate exercise, the above medication should be used under the guidance of a doctor, avoid self-medication.