If the menstrual flow is relatively less than the previous one, it is most likely due to diseases, such as due to polycystic ovary syndrome, endometrial tuberculosis, pelvic tumor, resulting in reduced menstrual flow. In this case, appropriate tests, such as blood tests, should be done to understand the endocrine situation, and then regulation should be given according to the endocrine situation. If androgens are high, it is recommended to lower androgen therapy and then give artificial cycle therapy, so that the menstrual flow will increase. If incomplete adhesions are caused by a history of abortion, hysteroscopy is recommended. After separating the adhesions, an intrauterine device can be inserted to avoid re-adhesions, and after the operation, oral supplementation can be given to promote the growth of the endometrium and change the menstrual flow.