A 26 year old male with an erect penis as small as a child’s indicates the presence of abnormal penile development, which can be treated surgically in conjunction with his condition. The penis of a 26-year-old man is already fully developed, and there is no possibility of secondary development. Neither medication nor physical therapy can increase the size of the penis. For men with a short penis, penis enlargement can be considered as an effective way to improve the situation. It should be noted that there are certain disadvantages and risks associated with this type of surgery. For example, the length of penis lengthening surgery is limited and may not be able to reach the length of a normal male. It is recommended that men go to a regular hospital as soon as possible for medical checkups, and follow the doctor’s advice if they need to take surgical treatment.