Whether it is a male or female ligation, there is a possibility of unwanted pregnancy due to various factors such as improper operation or prolonged operation, dislodging of the ligature wire and other factors leading to contraceptive failure. Therefore, even if there is a delay in menstruation for 10 days after the ligation, blood or urine HCG tests should be conducted to determine whether the patient is pregnant or not. After ruling out pregnancy, if the patient usually has regular menstruation, but once in a while the menstrual period is delayed for 10 days, it should be considered as an episodic menstrual disorder. It is related to the patient’s recent stress or excessive weight loss, or changes in work or study environment and many other factors. In this case, the patient can do ultrasound to observe the thickness of the endometrium, if it reaches 1.0cm, you can wait for menstruation; if it is around 0.8cm, you can use progesterone to promote menstruation; if there are other conditions, according to the results of the examination, you can choose to take medication to regulate.