GnRH injection for endometriosis can generally improve the pelvic internal environment, but due to individual differences and different treatment effects, it is not certain that it will be effective for every patient. Endometriosis is a condition in which the active endometrium is ectopic to other tissues or organs outside the uterine cavity, and it also manifests itself in bleeding and other manifestations in response to ovarian cyclic changes. GnRH is a gonadotropin-releasing hormone receptor agonist, which can improve the pelvic environment by competitively antagonizing its receptor and thereby inhibiting pituitary and ovarian function to shrink the lesion or prevent recurrence. For patients with endometriosis, 3 to 6 injections are usually required, and it should also be noted that GnRH injection may cause women to experience hot flashes, night sweats, insomnia, menstrual disorders, vaginal dryness, and other symptoms related to ovarian hypoplasia. It should be contraindicated for women who are allergic to the product, pregnant or lactating women, or women with unexplained vaginal bleeding. For patients with endometriosis, it is recommended to visit the gynecology department of regular hospitals and choose the appropriate way of active treatment under the guidance of doctors to improve the symptoms of menstrual abdominal pain and improve the pregnancy rate.