With the development of society and the enhancement of women\’s awareness of independence, more and more pregnant women still undertake certain physical labor during the third trimester of pregnancy, including lifting heavy objects. However, many people are worried that such behavior will have adverse effects on the fetus. This article will explore the impact of heavy lifting in late pregnancy on the fetus from a medical perspective. First, we need to understand the development of the fetus in the third trimester. The third trimester refers to the period from 28 weeks of pregnancy to before delivery. At this time, the fetal organs are basically fully developed, and the focus is on weight gain and maturity. Therefore, the main impact of heavy lifting in late pregnancy on the fetus is transmitted through the physical condition of the pregnant woman. Is it normal for frequent fetal movements in late pregnancy? When pregnant women lift heavy objects, it will increase abdominal pressure, leading to an increase in intra-abdominal pressure. This may affect blood circulation in the uterus and thus the supply of oxygen and nutrients to the fetus. However, research shows that when normal, healthy pregnant women lift heavy objects, this effect is short-lived, and the fetus can ensure normal oxygen and nutrition through self-regulation. Simply lifting heavy objects does not have significant adverse effects on the fetus. However, the impact of heavy lifting in late pregnancy on pregnant women cannot be ignored. Lifting heavy objects may increase the physical burden of pregnant women, increase the pressure on the lumbar spine and pelvis, and lead to problems such as low back pain and pelvic discomfort. These issues may affect a pregnant woman\’s quality of life and productivity. Therefore, it is recommended that pregnant women avoid overexertion and heavy physical labor during the third trimester to protect their health. In addition to the impact of physical burden, pregnant women also need to pay attention to the correct posture when lifting heavy objects. Incorrect posture may cause uneven stress on the lumbar spine and increase the risk of lumbar spine injury. Therefore, pregnant women should use correct posture when lifting heavy objects and avoid twisting the waist or exerting excessive force. You can choose to squat down and lift objects to reduce the stress on the lumbar spine. Also, ask for help to avoid lifting heavy objects alone. To sum up, the impact of heavy lifting in late pregnancy on the fetus is relatively limited. The fetus can ensure normal oxygen supply and nutrition through self-regulation. However, pregnant women themselves may be at risk of physical strain and incorrect posture. Therefore, it is recommended that pregnant women avoid overexertion and heavy physical labor during the third trimester of pregnancy and pay attention to the correct posture when lifting heavy objects. For pregnant women who need to lift heavy objects, it is best to seek advice and guidance from a professional doctor to ensure the health of themselves and their fetus.