To summarize the management experience of early postoperative sequential enteral nutrition in 2 children with idiopathic biliary perforation. Key points of nursing included establishing a special nutrition management team，strengthening nutrition screening and evaluation，formulating individualized parenteral nutrition plan，starting the early sequential enteral nutrition support process during the perioperative period，strengthening feeding tolerance assessment. Digestive fluid reinfusion was implemented，and percutaneous endoscopic gastrostomy management was strengthened；regular follow-up and continuous home enteral nutrition nursing were carried out. After careful treatment and nursing care，the nutritional status of the 2 children was significantly improved and they recovered smoothly. The growth and development were normal at the 6-month follow-up after discharge.

To summarize the clinical nursing experience of 3 children with high flow fistula of digestive tract who underwent gastric fluid,bile fluid and intestinal fluid reinfusion combined with relay-type nutritional support. The key points of nursing include：nutritional risk screening and assessment,implementation of relay nutritional support treatment,enteral nutrition combined with digestive fluid reinfusion,fistula management and humanistic care for children and their parents. After careful treatment and nursing care,the weight of the 3 children increased steadily and their nutritional status improved gradually. All of them recovered and were discharged from hospital smoothly.