“Doctor, why is my baby’s penis so small?” “Doctor, my baby’s penis is almost gone”; “Doctor, my baby has a little difficulty in urinating and his penis is not growing much.” From time to time, I hear parents ask the doctor nervously during clinic visits. It is understandable that parents have questions about such a crucial organ and worry about whether it will affect their baby’s future life and fertility. What is an anaphylactic penis? Is it congenital? Will it be inherited? The occult penis is a congenital abnormality in the development of the penis, which is more common in fatter babies, why is it congenital? First, the skin of the penis of babies with occult penis is stunted and too short. Second, the baby penis foreskin cavity is too small. Third, the skin of the baby’s penis is not wrapped around the penile corpus cavernosum, resulting in the penile corpus cavernosum being unsupported and retracted into the body. The cause of this disease is still unclear, the disease is congenital, some mothers will ask: “What causes ah, I was very careful during pregnancy, is it bad to eat something or contact with something bad caused? Will my baby still be like this when I have another baby? His father didn’t do this either?” I can only say that there is no definite cause for this disease, and there is no need to find the cause because it is basically impossible to find. If a baby with a hidden penis grows up and has a baby, there will be very few babies with a hidden penis. Therefore, you don’t need to worry about this issue. How does a baby with anaplasia look like? What are the signs? 1. Babies with occult penis have a short penis appearance, and the foreskin wraps around the penis like a bird’s beak; 2. The penis skin is intact, but the penis skin and foreskin cavity are empty, and the penis skin is not attached to the penis body; 3. When you push the skin of the penis root backward with your hand, babies with occult penis can see the normal penis showing, and when you release your hand, the penis body quickly retracts. 4.Hidden penis needs to exclude hypospadias and micropenis. Obese babies have a lot of fat in front of the pubic bone and the penis body hides inside, this situation also needs to be excluded.