Constipation in early pregnancy is not necessarily associated with dietary habits, bed rest and inattention to exercise. Constipation is not an inevitable phenomenon after pregnancy. Some women may have heavy early pregnancy reactions or poor living habits, consume less vegetables and fruits in early pregnancy, and are sedentary, they may become constipated. However, some women consume more vegetables and fruits and are usually active, so constipation will not occur. Constipation in early pregnancy is mainly related to the lifestyle habits of pregnant women. In the middle and late stages of pregnancy, the pregnant woman’s uterus increases, or the fetus presses on the rectum, which may relatively easily cause constipation. Generally constipation in late pregnancy is relatively more closely related to pregnancy. Therefore, it is recommended that pregnant women in early pregnancy pay attention to diet, eat more fresh vegetables and seasonal fruits, do not eat spicy and stimulating, fried food, should not sit for a long time after meals, moderate amount of slow walking can promote gastrointestinal motility, reduce the occurrence of constipation.