After cesarean section, you should start to eat food to replenish qi and blood after the mother resumes normal diet and normal urination and defecation, usually one week after delivery is the best. Caesarean section is the most common operation in obstetrics, and during the operation, it usually does not cause damage to the intestines. However, due to the need for anesthesia, a strict water fast is required for 8 hours before surgery, and the recovery of gastrointestinal function is slow after surgery before the anesthetic effect wears off. Most women will pass gas within 24 hours after surgery, which indicates the gradual return of normal intestinal motility. Only after deflation can a small amount of liquid food be eaten, and only after eating without symptoms of abdominal distension and abdominal pain can a semi-liquid diet be gradually changed. Most of the foods that have the effect of replenishing gas and blood are more difficult to digest and contain higher sugar than normal foods, so if the mother eats such supplements too early, it will easily increase the burden on the stomach and intestines, causing bloating, abdominal pain and constipation. In the week after the caesarean section, the maternal gastrointestinal function basically returned to normal, bowel movements and urination, and has begun to breastfeed, the demand for nutrients increased, at this time and then began to eat blood and gas tonic food, not only to meet the maternal nutritional needs, to promote postpartum recovery, but also to promote the secretion of milk, conducive to breastfeeding. When choosing the food to replenish the qi and blood after childbirth, it should be considered according to the physical condition of the mother, and if the mother has uncomfortable symptoms after eating, she should stop eating and change to another diet in time.