The symptoms before death in uremic patients may be severe shortness of breath, coma, severe chest pain, or general convulsions, or even sudden cardiac arrest. Uremic patients have low resistance and are prone to lung infections. Severe lung infections can lead to severe shortness of breath, which can cause respiratory failure and death if the condition lasts for a long time. Uremic patients have increased vascular sclerosis throughout the body, as well as cerebral vessels, so it is easy to develop brain hemorrhage and cerebral infarction, people with these two diseases are prone to coma, and if the complication of brain herniation is easy to die. Uremic patients with increased vascular sclerosis are prone to acute myocardial infarction in the cardiovascular area, with patients showing severe chest pain and myocardial infarction, which is also a very common cause of death in uremic patients. Uremic patients have impaired potassium excretion, and if they do not pay attention to their diet, such as eating too many fruits and vegetables, they are prone to hyperkalemia, which can easily cause malignant cardiac arrhythmias, especially in patients with A-Syndrome, which manifests as general convulsions and subsequent death.