Didrogestrel tablets belong to the main active ingredients of sex hormone drugs. Didrogestrel is a progestin that, when taken by patients, can increase the level of progesterone in the body and counteract the risk of endometrial thickening and cancer caused by excess estrogen. As progesterone and estrogen in the body are in a period of change in balance, droprogesterone can act as an exogenous supplement to progesterone and prevent the estrogen level from continuing to increase. Didrogestrel does not affect fat metabolism and has no estrogenic or androgenic effects. In clinical practice, dydrogesterone tablets are mainly used for the relief and treatment of progesterone deficiency or low progesterone levels and related diseases or symptoms. For example, dydrogesterone can be used to treat endometrial hyperplasia, irregular menstruation, dysmenorrhea, vaginal bleeding disorders, and miscarriage due to progesterone deficiency.