When menstruation is delayed for half a month, the possibility of pregnancy must first be ruled out. Therefore, the patient can take a urine pregnancy test with morning urine on her own, or go to the hospital to check the blood chorionic gonadotropin and progesterone as well as the ultrasound, to determine whether she is pregnant or not, as well as the exact location of the conception. Depending on whether the patient has a pregnancy requirement or not, the choice is whether to abort or continue the pregnancy. After pregnancy is ruled out, if the patient usually has regular periods, the main concern is episodic menstrual disorders. In this case, the patient needs to have an ultrasound to observe the endometrium. If the endometrium can reach 1.0cm, it means that the menstruation is about to start, and the patient can wait for the menstruation. If the lining is less than 0.8cm, progesterone can be used to promote menstruation. If it is around 0.2-0.3 cm, estrogen is needed to promote menstruation.