High creatinine avoidance foods mainly include high salt, high fat, high potassium, high phosphorus and other foods, moderate to severe renal insufficiency need to limit protein food intake. 1. High salt: such as salted vegetables, all kinds of pickled food, and salty snacks. Eating too much food with high salt content may increase the burden on the kidneys, aggravate edema, cause high blood pressure, and in severe cases, may even lead to acute left heart failure. 2. High fat: such as fried, animal fat food, etc. Eating too much high-fat food will increase the burden on the stomach and intestines, and may aggravate hyperlipidemia. 3. High potassium: such as Chrysanthemum coronarium, black dates, pea shoots, etc. Because kidney disease can lead to potassium metabolism disorders, hyperkalemia is prone to cause the risk of cardiac arrest, therefore, patients with high creatinine should strictly limit potassium intake. 4. High phosphorus: such as mushrooms, nuts, dairy, etc. High phosphorus can easily lead to renal osteodystrophy. 5. Limit protein food intake: moderate to severe renal insufficiency needs to limit protein food intake, protein-restricted diet can reduce the generation of nitrogenous metabolites and alleviate symptoms and related complications. Moderate consumption of high-quality low-protein foods, such as eggs, milk and lean meat. Patients with elevated creatinine are advised to go to regular hospitals in time and receive standardized treatment under the guidance of doctors.