Occult penis is easily misdiagnosed as prepuce or circumcision. If left untreated, occult penis can lead to sexual dysfunction in children as adults, causing psychological and physical disorders in affected children. The incidence of occult penis has increased significantly in recent years, and is related to children’s excessive intake of high-calorie fried foods or fast food. The “occult penis” often occurs in obese children and can easily be misdiagnosed as circumcision. If left untreated, it can lead to sexual dysfunction and cause psychological and physical disorders in children when they become adults. The occult penis refers to the penis buried under the skin, and the penis body is mostly separated from the foreskin. The penis is short in appearance, and the outer opening of the foreskin looks like a bird’s beak. When the penis is held in the hand and the surrounding skin is pushed back, the penis body can be revealed. However, most of the foreskin cannot be turned up to reveal the glans, so it is easily treated as prepuce or prepuce. In clinical practice, it is more common in obese children, and patients often visit the clinic because of the appearance of small penis, difficulty in urination or wet pants. The cause of occult penis is that during embryonic development, due to factors such as separation of the penile skin from the penile body, abnormal development of the meatus membrane, and abnormal location of the attachment of the suspensory ligament to the penis, the penis cannot extend outward normally, and the penile body is completely or partially hidden in the subcutaneous fatty tissue in front of the pubic bone. In severe cases, all that can be seen is an empty foreskin. The occult penis is a relatively rare congenital condition, but its incidence has increased significantly in recent years, which is related to the excessive intake of high-calorie fried or fast food in children nowadays. A large amount of fatty tissue accumulates around the penis due to obesity, pushing the penile foreskin forward, causing the penile body to separate from the foreskin and the penile body to be buried in fat to form an occult penis. This can lead to difficulty in urination and sexual dysfunction in adulthood, and is easily misdiagnosed. If parents find out that their child has this condition, they should consult with a medical professional as soon as possible, have surgery to correct it early before puberty, and help their child control his or her weight. The hidden penis is often misdiagnosed Some boys with short penises are often misdiagnosed as having a prepuce, but in fact it is a hidden penis. The treatment of the hidden penis is a matter of concern. The treatment for occult penis is the opposite of circumcision, which involves removing the overly long foreskin (i.e. circumcision), while the treatment for occult penis involves surgery to enlarge the foreskin and thus lengthen the skin of the penis, and also to “pull” the spongy body of the penis out of the stomach and fix it well. This not only restores the normal shape of the penis, but also restores the normal physiological anatomy of the penis, thus facilitating the development of the penis and its eventual growth. The effect of this surgery is satisfactory and has an “immediate effect”, which is very popular among parents. If you find a child with penile dysplasia, it is best to go to a regular hospital to confirm the diagnosis. If you do not understand the causes and anatomical variations of the disease, and if you misdiagnose occult penis as circumcision, the result will be that the already short penile skin will become even shorter, and once the post-operative penile corpus cavernosum loses its skin attachment and protection, the development of the penis body will be more and more inhibited. The best time for treatment is after the age of 3 and before school age, when children can actively cooperate with the treatment and have few post-operative complications, and it is generally more appropriate to do the surgery at the age of 4 to 5. The treatment of occult penis is firstly, weight control, which is very important to improve the symptoms; secondly, regular visits to the hospital before school age to observe the development of the penis; thirdly, for those with serious conditions, penile orthopedic surgery (penile orthopedic surgery) is feasible after school age. As long as we have a correct understanding of occult penis, pay attention to the difference between it and prepuce, and choose the appropriate surgery method, we can make the penis of the affected children achieve a normal appearance.