The exact duration of life after hemodialysis should be assessed according to its cause, condition and other aspects. If acute kidney injury is treated with hemodialysis and reversible factors are corrected at the same time, renal function may be restored and life expectancy will not be affected; if chronic renal failure is treated with hemodialysis and systemic complications such as cardiovascular and cerebrovascular complications occur, life expectancy may be shortened but the exact duration of life is usually not determined. If acute kidney injury is treated with hemodialysis and reversible factors are corrected at the same time, such as rehydration and relief of obstruction, renal function may recover gradually, and this condition may not affect life expectancy. In case of chronic renal failure undergoing hemodialysis treatment, patients may experience nausea, vomiting, heart failure, uremic cardiomyopathy, shortness of breath, shortness of breath, renal anemia, convulsions, hallucinations, coma and other symptoms. This condition may shorten life expectancy if the patient has a combination of chronic diseases such as hypertension and diabetes mellitus, but the exact length of life is usually uncertain. If hemodialysis patients feel unwell, it is recommended that they go to regular hospitals in time and receive standardized treatment under the guidance of doctors.