The reason for the thick belly of pregnant women, may be thicker abdominal fat, may also be caused by excessive weight gain, generally not caused by disease, pregnant women do not worry too much. 1, thick abdominal fat: the abdomen during pregnancy is the easiest part of the fat, pregnant women in the pre-pregnancy abdominal fat may have been thicker, pregnant women need to provide adequate nutrients to the fetus during pregnancy, the amount of food increases, excess nutrients may be converted The excess nutrients may be converted into fat accumulation in the abdomen, resulting in further thickening of abdominal fat thickness; 2, weight gain too fast: pregnant women eat too much during pregnancy, which will lead to an increase in body weight, the increased weight will be distributed in various parts of the body, pregnant women may not care about other parts of the body, only to notice the thickening of the belly of the abdomen. Therefore, during pregnancy, you need to pay attention to adjust the diet structure, avoid eating too much food containing too much sugar or greasy food, so as not to gain weight too fast, appropriate consumption of fresh fruits and vegetables, moderate exercise, control weight gain, but also to promote intestinal peristalsis, reduce the occurrence of intestinal flatulence.