It is not recommended that pregnant women often squat, especially after the middle of pregnancy often squatting, will reduce local blood circulation, affecting the growth and development of the fetus. 1, affect the placenta blood supply: due to prolonged squatting will increase abdominal pressure, resulting in obstruction of blood circulation reflux in the lower extremities, affecting the placenta blood supply, which is not conducive to the growth and development of the fetus; 2, cause knee damage: pregnant women themselves have a large weight, long-term squatting will cause knee unnecessary damage to the knees; 3, the formation of hemorrhoids: prolonged squatting easily lead to congestion and enlargement of the anal canal or lower rectal veins, the formation of hemorrhoids; 4, preterm delivery: if a long time squatting, may cause abdominal pain, preterm delivery, etc.; 5, placental abruption: pregnant women with a low placenta, squatting will cause the cervix to open naturally, will increase the risk of placental abruption, the situation is serious will cause preterm delivery or miscarriage; 6, extrusion Fetus: pregnant women in the mopping, sweeping bending squatting will increase back pain, but also easy to squeeze the fetus in the abdomen. In addition, the squatting toilet during pregnancy can not be too long, try to choose the toilet in a sitting position, for pregnant women and fetuses are good. If you are constipated, you should not use too much force to defecate. If you use too much force, you may hurt the fetus, resulting in lack of oxygen and lack of oxygen in the uterus.