Didrogestrel tablets are not contraceptives, but belong to the progestin class of drugs. Their main effect is to regulate the state of hormonal balance in a woman’s body and bring the uterus into the secretory phase to counteract estrogen-induced endometrial hyperplasia. Didrogestrel tablets have a certain effect on preventing endometrial cancer. Didrogestrel tablets are mainly used clinically for the treatment of dysmenorrhea and irregular menstruation, and also for the treatment of irregular vaginal bleeding in women, as well as for the treatment of patients with habitual abortion due to the efficacy of progesterone. Patients need to pay attention when using didrogestrel. At the beginning of treatment, spotting vaginal bleeding may occur, and if the bleeding is heavy or lasts for a long time, it is recommended to visit a hospital promptly. In addition, the hormonal regulation effect of didrogestrel may cause changes in the hormone levels of patients, and symptoms related to hot flashes, dizziness and headache may occur.