People with poor liver function are advised to avoid drinking alcohol, abusing supplements and tonics, etc. Those with elevated blood ammonia should also avoid high protein foods. 1. Alcohol: Alcohol needs to be metabolized in the liver, and long-term consumption of large amounts of alcohol may lead to liver cell damage, so it is recommended to avoid drinking alcohol or alcoholic beverages for people with poor liver function. 2. Supplements or tonic drugs: some supplements or tonic drugs sold on the market may have liver toxicity, so people with poor liver function should also avoid the intake of such food or drugs in their daily life. 3. High-protein foods: For patients with hepatic decompensation and elevated blood ammonia, eating high-protein foods may induce hepatic encephalopathy and aggravate the condition. In daily life, people with liver dysfunction should maintain good dietary habits, avoid spicy and stimulating food intake, quit smoking, ensure a good daily routine, and follow the doctor’s instructions to standardize the treatment if necessary.