Cryptorchid penis generally refers to hidden penis. Cryptorchid penis can be differentiated by clinical symptoms, combined with relevant examinations to confirm the diagnosis. Concealed penis is a kind of penis body development is normal, but the penis buried in the suprapubic fat pad of a class of diseases. The cause of the disease is mostly considered to be obesity, and if the congenital cryptorchid penis occurs in children, it is mostly due to the abnormal development of the penile meatus, abnormal penile anatomy and other factors. Patients with cryptorchid penis show that the penis still looks short when lying down, and the circumcision and circumcision cavity are narrow, etc., but the testicles and vas deferens are generally developed normally. When one hand pulls the head of the penis, and the other hand pushes back the skin at the root of the penis, it can reveal the penis body which is basically normal in development, and if you let go of your hand, the penis body will retract quickly. Patients with an invisible penis may experience mild anxiety and depression. To confirm the diagnosis, the patient can through the blood sex hormone measurement, chromosome testing and other ways of comprehensive examination. To summarize, once patients have symptoms suspected of hidden penis, they need to go to regular hospitals for treatment.