If the delayed period is episodic, it may be due to the recent mood swings, causing hormonal disorders in the body. Generally, after timely adjustment of bad emotions, work and rest, menstruation can be restored, and the normal menstrual cycle is 21-35 days, and there is no need to worry too much about the delay in this range. However, if it is delayed for a long time, we need to deal with the causes of delayed menstruation: 1. pregnancy: most women ovulate about 14 days before menstruation, if you have intercourse before or after ovulation, it is possible that the delayed menstruation is caused by pregnancy, the patient can perform blood HCG or urine HCG test, and if pregnancy is confirmed, choose whether to continue the pregnancy according to your will; 2. anemia: if the patient has recently experienced a large amount of blood loss, or long-term malnutrition, it may be possible to continue the pregnancy. or long-term malnutrition condition, it may lead to delayed menstruation. Patients can consume red dates, pig liver, longan, red beans, black fungus and other foods to promote the production of blood in the body to a certain extent and accelerate the onset of menstruation; 3, endocrine disorders: endocrine disorders in the body is the main cause of delayed menstruation, patients need to adjust their bad habits, maintain regular work and rest, comprehensive supplementation of nutrition, etc., can promote the onset of menstruation. On the basis of food regulation, medication can be administered, such as prolotherapy pills and progesterone. In addition, if there is a delay in menstruation, accompanied by symptoms such as memory loss and lack of concentration, it is recommended to go to the hospital to improve the relevant examination and carry out targeted treatment.