In recent years, many patients have come to the clinic because of the short appearance of the penis. There are two main categories of penile shortening, namely, one is congenital micropenis with abnormal penile corpus cavernosum development, which is affected by hormonal and genetic factors, and endocrine examination and treatment are feasible; the other is concealed penis with normal penile corpus cavernosum development but poor penile exposure, which includes congenital true concealed penis, obesity-related buried penis, etc. It is important to mention here that with the improvement of living standard, more and more children have poor habits such as improper diet and lack of exercise, leading to the increase of obese children, and the short appearance of penis associated with obesity has become more and more common. For these children, most of them can have erect penis at the stage of puberty, so it is recommended to lose weight in time and keep the penis locally clean, without surgery if it is not combined with prepuce. Congenital true occult penis requires surgery. The various surgical methods and treatment effects are currently the subject of much discussion. In recent years, with the mature application of penile flap transfer technology in the correction and treatment of occult penis, the appearance of the penis after surgery has greatly improved compared with the previous surgery, while reducing many detours in the past.