Glomerular filtration rate is a clinical index used to determine kidney function, which is calculated based on human blood creatinine values, age and weight. Low glomerular filtration rate represents abnormal kidney function and is treated as follows: 1. Find the cause: clarify the type of kidney damage and the presence of factors that aggravate it acutely. Such as infection, heart failure, volume deficiency, obstruction, unsatisfactory control of blood sugar and blood pressure can lead to acute exacerbation; 2. Pay attention to diet: control salt and water intake, reduce consumption of sugar, high cholesterol, high purine, high fat and foods that are damaging to the kidneys, as well as prohibit nephrotoxic drugs; 3. Regular review: if the glomerular filtration rate decreases without any symptoms, regular review should be emphasized.