Patients with acute pyelonephritis need to avoid spicy and stimulating diet during treatment, and eat a light diet with less food high in sugar, oil and fat. If cephalosporin antibiotics, such as cefixime, ceftriaxone, cefoperazone, etc., are used for treatment, strict abstinence from alcohol is required. Alcohol intake needs to be avoided during treatment and for 2 weeks after stopping the drug, because cephalosporin antibiotics and alcohol can cause disulfiram-like reactions, which can cause death in severe cases. In addition, there is no contraindication to the diet of patients with acute pyelonephritis. Patients are encouraged to eat more green vegetables and fruits and to drink more water and urinate more often during treatment.