There is an essential difference between dydrogesterone and dyne-35, dydrogesterone belongs to the progestin, can be used to stabilize the fetus, used to promote menstruation and treatment of menstrual disorders, etc., while dyne-35 is a short-acting contraceptive, mainly contraceptive, and can reduce androgenic hormones. Daying-35 is a combination of estrogen and progesterone, which will inhibit ovarian ovulation to prevent pregnancy, thin the uterine lining, and prevent the fertilized egg from implanting, so it can be used as a contraceptive. In addition, Daying-35 can treat hyperandrogenism, such as polycystic ovary syndrome patients with hyperandrogenism, can take Daying-35 oral treatment. These two drugs are mainly composed of completely different ingredients and have different effects.