Gynecological inflammation may cause low menstrual flow, such as after abortion or cleaning and during post-operative recovery, surgical trauma and infection lead to chronic inflammatory factors that stimulate the endometrium, causing chronic adhesions of the endometrium to develop into partial uterine adhesions, which eventually lead to reduced menstrual flow. In addition, there are several reasons that lead to low menstrual flow: 1. If the patient is mentally stressed, cold and excessive weight loss, etc., it may also lead to reduced menstruation; 2. If the patient has polycystic ovary syndrome, persistent anovulation or sporadic ovulation may also lead to low menstrual flow; 3. When there is excessive secretion of prolactin, such as the common clinical hyperprolactinemia, it may also lead to reduced menstrual flow; 4. endometrial union, the invasion of human type tuberculosis bacilli into the organism causes inflammatory changes in the genitalia, which can also lead to low menstrual flow. Therefore, when women have low menstrual flow, they must consult a doctor in time to clarify the cause of the disease and then treat the disease so as not to delay the condition.