A glomerular filtration rate of 79ml/min suggests a decrease in glomerular filtration rate, and patients are usually not advised to drink a lot of water. Under normal circumstances, the glomerular filtration rate is usually between 80 and 120 ml/min, so when the test result is 79 ml/min, the glomerular filtration rate is mildly decreased, and it is considered that the patient’s renal function may be impaired. Therefore, patients are not recommended to drink a lot of water, so as not to aggravate the burden on the kidneys and lead to sodium retention, etc. If the patient’s urine output is normal and there is no obvious edema, it is generally sufficient to maintain the normal physiological requirement of 1500~2000ml; if the patient has low urine output and edema, it is recommended that the patient reduce the amount of water intake. If the patient has abnormal glomerular filtration rate, it is recommended that the patient go to the regular hospital in a timely manner, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment under the guidance of the doctor.