Premenstrual constipation is often due to changes in hormone levels in the body, poor dietary habits, mental and psychological factors, which can usually be treated by adjusting diet and medication. 1, hormone level changes: changes in sex hormone levels before and after menstruation, which affects the normal function of the intestines, resulting in weakened intestinal peristalsis, thus causing constipation caused by digestion and bowel function. This situation is a normal physiological phenomenon, it is recommended that women eat more food rich in dietary fiber, such as bananas, honey water, etc., can play a laxative role, thereby improving the symptoms of constipation. If the constipation is heavy, can be used to lubricate the anus and intestinal tract, so as to promote defecation; 2, life, poor eating habits: such as eating spicy, greasy food, or diet is too fine, intake of dietary fiber too little, drink less water, can lead to constipation. In addition, if lying down immediately after meals, less exercise can lead to slow intestinal motility, causing constipation. Usually, after correcting bad habits and adjusting the diet, constipation symptoms can be relieved. Therefore, in daily life, attention should be paid to avoid eating easy to make stool hard, as well as indigestible food, develop the habit of regular defecation, moderate activity after meals, promote intestinal peristalsis, relieve constipation symptoms; 3, mental and psychological factors: before menstruation, women may appear irritable, anxiety, tension and other adverse emotions, which leads to autonomic dysfunction, affecting the gastrointestinal tract peristaltic function, resulting in constipation. Women should pay attention to keep a happy mood, avoid tension, anxiety, depression and other bad emotions, can listen to music, watch TV and other diversions to relieve bad emotions, and should pay attention to drink more water, can use clockwise massage to promote defecation. If you do not defecate for a long time, constipation should pay attention to timely hospital consultation to rule out other organic diseases. In addition, patients with constipation can also be treated with oral medications such as calcium polycarbophil, lactulose and polyethylene glycol under the guidance of a doctor.