The life expectancy of uremic patients without dialysis is variable, ranging from a few days to a few months, and complicated by hyperkalemia, gastrointestinal bleeding, and cardiac arrhythmia may die in a short period of time. Hemodialysis is one of the treatment modalities for uremic patients, which mainly removes toxins from the body, such as urea and creatinine, discharges excess water, and corrects electrolyte acid-base balance disorders. Once dialysis is stopped, electrolyte acid-base balance disorders, such as hyperkalemia, metabolic acidosis, and induced malignant cardiac arrhythmia may occur within a short period of time, and death may occur within a short period of time. Stop dialysis, urea accumulation, can gradually appear digestive symptoms, such as nausea and vomiting, loss of appetite, serious digestive bleeding; water can not be excreted, will gradually appear edema, heart failure, acute pulmonary edema and death. Although the above situation is not as fast as the emergence of acute complications, but will seriously affect the patient’s quality of life, may be a few days to a few months to death. Patients with uremia are advised to consult the nephrology department of regular hospitals for regular dialysis and appropriate treatment under the guidance of physicians.