Cryptorchid penis, also known as a condition that refers to congenital developmental abnormalities and deformities, is a condition in which the penile body is buried inside the body, with only the foreskin outside the body. Cryptorchid penis is a maldevelopment of the normally developed penile body to reveal, not a small development of the penile body itself. Cryptorchid penis is a developmental abnormality in which the penile body cannot be exposed, and the main etiology is related to congenital malformations caused by abnormal development of the meatus, etc. In addition, there is also a relationship with excessive perineal adipose tissue caused by obesity, in which the penile foreskin is not attached to the penile body. Cryptorchid penis is revealed by holding the penis in the hand and pushing back the surrounding tissue, which will reveal the penis hidden under the skin. As the child’s subcutaneous tissue decreases with growth, the penis may be revealed. Most hidden penises get better with age, or if they don’t, the foreskin may be surgically enlarged to expose the head of the penis. When you discover an occult penis, you should seek medical attention and follow your doctor’s instructions to decide on specific treatment.