klinefelter syndrome, also called congenital testicular hypoplasia syndrome, patients may show abnormal size and shape of testes, with testes less than 2cm in diameter, and at the same time, due to the abnormal function of testes, they cannot normally secrete testosterone and other androgens, so patients have a long and thin body shape, fine skin, reduced body hair, little or no beard, inconspicuous laryngeal nodes, thin and shrill voice, and male feminized features The patient’s body shape is long and thin, the skin is thin, the body hair is reduced, there is little or no beard, the throat is not obvious, the voice is sharp and thin, the male feminized features are more obvious, the bilateral breasts are enlarged, the penis is short, the sperm quality is low or there is no sperm in the semen, and even erectile dysfunction may occur, which may lead to sterility. A small number of patients may also suffer from low intellectual development and damage to their mental health. When the above symptoms occur, it is necessary to go to the urology department of the regular hospital in time. This disease is difficult to diagnose and treat, and the treatment is mainly based on the application of androgens, but the effect is not ideal.