Menstruation is rare and dark, and irregular menstruation may exist. Irregular menstruation is related to endocrine disorder, endometritis, etc. It may also be caused by uterine cold, or it may be related to recent diet. So we should go to the hospital for gynecological examination, cervical cancer screening, color ultrasound, endocrine hormone determination, etc. First of all, we should find out the causes, and use drugs to regulate the symptoms according to the causes, so as to achieve good results. At ordinary times, pay attention to personal hygiene. Do not eat raw, cold, spicy and stimulating food. During menstruation, pay attention to light diet and eat more food rich in protein.