It is an oral contraceptive with the following main therapeutic effects: 1. It can treat functional uterine bleeding, stopping bleeding, adjusting the menstrual cycle, and protecting the endometrium. 2. It can reduce high androgen levels in women and treat female androgen-dependent diseases, such as polycystic ovary syndrome and acne. 3. It is an oral contraceptive, containing high levels of estrogen and progestin, and is not recommended for long-term use to avoid adverse effects such as pain, headache, change in libido and depression.