Objective To explore the prevention and treatment of acute kidney injury (AKI) after gastrointestinal surgical procedures.Method We retrospectively analyzed the data of patients underwent gastrointestinal surgery in recent 2 years in the First Affiliated Hospital of Kunming Medical University and the First People's Hospital of Yunnan Province. Result The incidence of AK1 was 2.1%. Elderly patients with basic diseases had poorer prognosis than non-elderly patients. Conclusion In the patients after gastrointestinal Surgery, early rehydration, diuresis, ant-infection and preventive hemodialysis can achieve the goal of prevention and treatment of acute kidney injury in early stage.