Normal people who drink too much water generally will not affect the kidneys, but may cause electrolyte disorders, or even water intoxication, which is unfavorable to health; such as those who have basic kidney diseases, excessive drinking may aggravate kidney damage. Kidney is the main organ to expel water from the body, and normal people’s kidney function is very strong, excess water can be discharged from the body after drinking, and will not cause damage to the kidneys. However, if the patient has basic kidney disease, resulting in decreased renal filtration function, excessive drinking water can lead to increased blood volume, resulting in increased blood pressure, which will affect the function of the kidneys, especially the reduced urine volume of kidney disease patients are not suitable for drinking a lot of water, so as not to aggravate the kidney damage, and even cause acute heart failure and life-threatening. It is recommended that people with normal renal function drink a moderate amount of water; patients with abnormal renal function drink a small amount of water under the guidance of the doctor, and at the same time, carry out standardized treatment.