If a kidney function test reveals elevated urea creatinine, it indicates the presence of renal failure, which can be treated by giving detoxifying drugs on the one hand, and actively looking for the cause of the disease on the other hand, and dealing with it from the cause. Creatinine and urea are both indicators of kidney function, and if both are elevated, it is a bad sign, suggesting kidney failure. However, there is a good side, because there are acute and chronic renal failure, of which acute renal function has a better prognosis, and after active treatment, many patients can be cured. Chronic renal failure, on the other hand, cannot be cured once it is acquired, and the kidney function will gradually deteriorate and finally develop into uremia. Therefore, once kidney failure is detected, we must actively look for the cause and deal with it from the etiology, if it is acute kidney failure, we should strive to recover. If it is chronic renal failure, then the underlying cause should be controlled to avoid the factors of deteriorating renal function, so that the renal function can deteriorate more slowly, which can improve the quality of life of patients.