HCG injection generally refers to injectable chorionic gonadotropin, which has the effect of promoting and maintaining luteal function, promoting folliculogenesis and maturation in women, and inducing the descent of testes and the development of male secondary sex characteristics in men. Chorionic gonadotropin for injection is a kind of gonadotropin drug, which is mainly used in the clinic for female anovulatory infertility caused by pituitary gonadotropin insufficiency, female corpus luteum insufficiency, functional uterine bleeding, early gestation preeclampsia, habitual miscarriage and so on, or used in the diagnosis and treatment of pre-pubertal male cryptorchidism, male infertility caused by hypopituitarism and so on. When Injectable Chorionic Gonadotropin is used to promote ovulation, it may produce ovarian cysts with mild stomach bloating, stomach pain and other adverse symptoms, and may also increase the rate of multiple births or the risk of neonatal immaturity and preterm delivery, and when used for the treatment of cryptorchidism, it may result in the symptoms of precocious puberty such as enlargement of penis and testicles, and increase in the growth of pubic hair. If you need to use injectable chorionic gonadotropin, you should do it under the operation of a professional doctor, so as not to use the medicine privately, which may cause adverse consequences.