The effect of heavy work in pregnancy is that if you do heavy work in early pregnancy may cause abdominal pain, vaginal bleeding triggering the aura of miscarriage, or even cause miscarriage; if you do heavy work in the middle of pregnancy, it is also easy to cause the aura of miscarriage; if you do heavy work in the second trimester, it may cause premature rupture of fetal membranes, vaginal bleeding, or even cause premature birth, so you should combine work and rest during pregnancy, not to do particularly heavy physical work work, and pay attention to rest. During pregnancy, pregnant women should enhance nutrition, keep their vulva clean and hygienic, have regular prenatal checkups, and eat nutritious food, including lean meat, eggs, milk, and fresh fruits and vegetables. So during pregnancy, pregnant women should try not to do heavy work.