The term “vacation” is generally used to refer to a woman’s menstrual cycle. After the ligation surgery, if the menstrual flow is low and lasts for a long time but the hormone level is normal, it may be caused by surgical stimulation, endometrial inflammation and other factors. 1. Surgical stimulation: Ligation surgery may cause pain, etc., and the body will react with stress, causing endocrine hormones to fluctuate within the normal range, resulting in changes in menstruation, but the result of sex hormone six test is still normal. 2. Inflammation of the uterine lining: If there are diseases such as endometritis, the uterine lining may not shed properly under normal hormone conditions, resulting in low menstrual flow and prolonged menstruation. If women have abnormal menstruation after ligation, they should consider whether the menstrual changes are caused by ligation, or they may have some underlying diseases. When this happens, they need to consult a doctor in time, complete the relevant examinations, clarify the specific causes under the guidance of the doctor, and deal with them accordingly.