It is recommended to go to the hospital in a timely manner to clarify the specific cause of edema and to treat it. Common causes such as kidney disease, especially nephrotic syndrome patients, will appear a large amount of proteinuria, edema, it is recommended to perform a kidney puncture biopsy, and after the results of the kidney puncture, choose hormone or hormone combined with immunosuppressants for treatment. For patients with hypoproteinemia, appropriate intravenous albumin supplementation is recommended to increase colloid osmotic pressure, and for patients with significant swelling, diuretics can be used for symptomatic treatment. If the leg swelling is due to heart disease, the patient should be seen by a cardiologist and can be treated symptomatically with diuretics first.