The claim that lifting heavy objects will make the placenta thicken is unfounded, and lifting heavy objects during pregnancy will lead to the risk of miscarriage and premature birth. Lifting heavy objects will make the placenta thickening this argument is not based on, and early pregnancy is in the critical period of embryonic growth and development, embryonic development is still unstable, at this time pregnant women lifting heavy objects, due to excessive exertion and exertion, there is a risk of triggering a miscarriage. Into the middle and late pregnancy, with the growth and development of the fetus, the uterus increases, pregnant women lifting heavy objects with excessive force and exertion, may induce uterine contraction, causing preterm labor, placental abruption, hemorrhage and other risks, serious cases of life-threatening mother and child. Pregnant women should pay attention to rest during pregnancy and seek timely medical attention if any abnormalities occur, so as not to delay the condition and cause adverse pregnancy outcomes.