Delayed menstruation for one month may be related to pregnancy, endocrine disorders and gynecological diseases. 1. Pregnancy: If a woman has a normal sex life and her menstrual cycle is regular, a one-month delay in menstruation may be related to pregnancy. 2. Endocrine disorders: Generally, it is normal for a woman’s menstrual cycle to be delayed or advanced within seven days, but if it is too long, it may be related to endocrine disorders, which are caused by factors such as excessive stress in life and irregular diet. 3. Gynecological diseases: If there are endometrial polyps, uterine adhesions, cervical adhesions and other gynecological diseases, it will also cause the body to appear such a situation. There may be other reasons for the delayed menstruation for more than a month, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment.