Normal people drink water even if the amount of water is on the high side, it will be discharged from the kidneys, so edema usually does not occur. If edema occurs, consider whether the patient has renal hypoplasia or cardiac hypoplasia. If there is renal and cardiac hypoplasia and drinking water leads to edema, you need to go to the hospital as soon as possible, and give appropriate treatment such as taking diuretics to promote the elimination of water from the urine, reduce the burden on the heart, and improve cardiac function and other treatments, and you can get rid of the edema through comprehensive treatment. However, patients with cardiac or renal insufficiency are advised to drink a moderate amount of water, and it is not recommended to drink a large amount of water within a short period of time, because the water discharged from the body of such patients is limited.