A big stomach after cesarean delivery is mainly caused by fat accumulation, which can be gradually restored to a flat stomach through diet control and exercise. 1. Diet control: After cesarean delivery, you can control your diet appropriately, mainly by scientifically controlling the amount of food you eat, which should be gradually reduced, and do not overdo dieting. Moderate consumption of food rich in protein, vitamins and other nutrients, do not overeat, eat more light and easy to digest food, pay attention to a balanced diet. 2. Exercise: The physiological recovery period after cesarean section is three months, during which it is not recommended to do exercise. After the physiological recovery period, you can do appropriate exercises, such as practicing yoga, cycling, jogging, etc., to help burn fat and make the stomach flat again. After cesarean section, you should pay more attention to the postoperative rest and do not do tummy reduction immediately. If there is any discomfort after the operation, you should seek medical advice promptly.