The symptom of wanting to poop and not being able to do so at 37 weeks of pregnancy may be a normal physiological condition, or it may be caused by constipation or hemorrhoids. Patients need to promptly go to the hospital anorectal or obstetrics department to determine the cause of the disease and treat the cause. First, physiological factors: 37 weeks of pregnant women due to uterine enlargement pressure to the rectum, resulting in the phenomenon of wanting to diarrhea and can not pull out. Usually normal circumstances may also be signs of labor, it is recommended that timely hospital consultation. Second, disease factors: 1, constipation: slow gastrointestinal motility during pregnancy, pregnant women often experience constipation, resulting in wanting to poop and can not pull out, at this time you can use Kesler to help defecate, try to avoid the use of other drugs. In addition, the patient can eat more fruits and vegetables. 2, hemorrhoids: pregnant women suffering from hemorrhoids, there will also be the symptom of bowel movement. The discomfort can be alleviated by improving living habits or manipulation reset. Surgery or medication is not recommended during pregnancy and can be chosen after delivery according to the physical conditions as appropriate. Pregnant women should pay attention to a reasonable diet structure in their daily life during pregnancy, keep the diet light, eat more fresh fruits and vegetables, especially coarse grains and coarse fiber foods. Maintaining regular exercise can promote defecation and improve symptoms. If the uncomfortable symptoms last for a long time, seek medical treatment in time to avoid delaying the condition.