Pregnancy is very likely to lead to constipation, because after pregnancy the enlarged abdomen compresses the colon, leading to difficulties in defecation, and after pregnancy due to changes in hormone levels, also makes the peristaltic movement of the stomach and intestines slow down, so pregnancy many women will have constipation. The most effective way to relieve severe constipation is to use the following methods: 1. Performing appropriate and effective exercises, strengthening the exercise within one’s ability such as walking and walking, can promote gastrointestinal peristaltic function and relieve transmission-type constipation caused by slowed peristaltic movement of the colon; 2. It is recommended that patients should drink more water and eat more foods with high fiber, which can also promote colon peristaltic movement, increase the volume of stool and accelerate the improvement of constipation. If after effective lifestyle habits still cannot be improved, it is recommended that pregnant women go to the hospital and be prescribed safe laxatives with little side effects, such as lactulose and polyethylene glycol, which have been highly recommended in various digestive guidelines for pregnant women and do not cause adverse reactions, mainly through osmotic bowel movement methods, to improve the constipation condition of pregnant women. Lactulose, in particular, also improves the micro-ecological environment in the intestine and may also relieve constipation. Patients are not advised to use stimulating laxatives such as aloe vera pills and rhubarb to stimulate bowel movements. Such stimulating laxatives may lead to electrolyte disorders, aggravation of diarrhea, and may even induce the occurrence of miscarriage. Therefore, those who have severe constipation in pregnancy should go to the hospital and be prescribed safe and effective medication to improve constipation by the doctor.