Obese women of childbearing age are increasing year by year. Obese pregnant women are at great risk and need to pay more attention to perinatal care and pregnancy nutrition, exercise, and monitoring in order to achieve good pregnancy outcomes. Pregnancy itself is a state of insulin resistance, and obese pregnant women increase the risk of many poor pregnancy outcomes. Pre-pregnancy obesity and overweight are associated with poor pregnancy outcomes, including:hypertension, diabetes, respiratory (asthma, sleep apnea), thromboembolism, and increased rates of surgical delivery by cesarean section. Incisional infections. Endometritis, complications of anesthesia (difficult intubation or epidural placement). Congenital anomalies of the newborn, LGA, stillbirth, obstructed shoulder delivery, distant adult complications (obesity, diabetes). The risk of complications is increased in all obese pregnant women: 1. 2-3 times the risk of anovulatory infertility in women of childbearing age; 2. miscarriage, 1.5-2 times the risk of miscarriage in early pregnancy; 3. thromboembolism: 2 times the risk of thrombosis and 5 times the risk of deep vein thrombosis in pregnant women with body mass index ³ 30; 4. hypertensive disorders: 2-3 times the risk of hypertension in pregnancy in pregnant women with body mass index ³ 30 The risk of hypertension during pregnancy is increased by 2-3 times, and the risk of hypertensive heart disease in the long term; 5. 11, due to obese women with thick subcutaneous fat, will lead to ultrasound difficulties, poor image quality, easy to miss the diagnosis of birth defects; 12, there are many cardiovascular and cerebrovascular diseases also increase the long-term risk; warm tips obese pregnant women in pregnancy can not use surgery or drugs to lose weight, can only use preventive strategies to avoid excessive weight gain. Special attention should be paid to dietary safety during pregnancy, healthy and nutritious eating, increased physical activity of pregnant women, timely lifestyle assessment, and monitoring of both mother and child to improve pregnancy outcomes.