If a woman is of childbearing age, the first thing to consider is whether the delay in menstruation is caused by pregnancy. It is recommended that a blood HCG and ultrasound test be performed to rule out pregnancy. If the delayed period is within one week, it is normal and you can wait for a few more days. There are many reasons for delayed menstruation, such as emotional factors, environmental factors and medications, which may cause delayed menstruation. If the menstruation is delayed for more than 10 days, it is recommended to have an ultrasound examination to understand the thickness of the endometrium and the condition of the uterine adnexa. If the thickness of the endometrium reaches 0.8-1.0 cm, it is recommended to give progesterone orally to promote the onset of menstruation. Before and after menstruation, you should pay attention to keep warm, keep a happy mood, abstain from eating cold, spicy and stimulating food, eat nutritious food, etc.