The life expectancy of patients with chronic kidney disease stage 4 is related to various factors such as condition and treatment effect, and cannot be generalized. If the patient’s condition is mild, without serious complications such as hyperkalemia, cardiac failure, neurological disorders, etc., and the treatment effect is good, the progression of chronic kidney disease can be delayed, and at this time, the life expectancy may be extended relatively effectively. If the patient’s condition is more serious and serious complications such as those mentioned above occur, the treatment effect is not good, and the patient may progress to uremia stage very quickly, at which time the patient’s life expectancy may be affected. Patients with chronic kidney disease are advised to go to regular hospitals for timely consultation and targeted treatment under the guidance of doctors.