Symptoms of chronic renal failure include: 1. Hematologic system, the most common complication is renal anemia, patients can appear pale, fatigue, palpitation and shortness of breath after activity; 2. Cardiovascular system, patients can develop hypertension, cardiac insufficiency, cardiomyopathy, pericarditis and cardiac lesions caused by toxic metabolism anomalies; 3. Neurological system, patients with uremia can develop inattention, and in the severe case, there are consciousness Disorders, headache, dizziness, convulsions, cerebral hemorrhage and cerebral infarction; 4, the digestive system is the most obvious and the earliest manifestation of uremia patients, nausea, vomiting, or even vomiting blood, black stools and other gastrointestinal hemorrhage; 5, the occurrence of renal bone disease is also very common, can be seen in myalgia, bone pain and intractable itching of the skin, secondary hyperparathyroidism, metastatic calcification, and so on.