There are many reasons for edema, such as heart, liver, spleen, lung, kidney, qi and blood disorders, hypothyroidism, endocrine disorders, rheumatism, allergies, functional edema and so on. It is recommended to go to the hospital for examination and diagnosis. If you can't find the cause, you can also find Chinese medicine and treat it with Chinese medicine. In order to limit protein's intake, we can eat meat in moderation, which contains more essential amino acids for the body. For fat, consider eating foods rich in monounsaturated fatty acids, such as vegetable oil. Limit the intake of water and salt to avoid increasing the burden on the kidneys and causing edema. It can reduce blood urea nitrogen inosine, relieve uremia, reduce blood phosphorus and relieve acidosis. Giving 0.6g/kg of protein every day can still meet the needs of the body and will not cause malnutrition. I wish you a speedy recovery. .