Clinically, chronic renal failure can be divided into compensated and decompensated stages, and the compensated stage is renal failure stages 1-3. The normal glomerular filtration rate is 100±10ml/min, and the compensated glomerular filtration rate is greater than or equal to 30ml/min. A normal person has two kidneys and can transplant one kidney to a patient with uremia, or a patient with uremia can transplant one kidney and recover completely, that is, the clinical manifestations will appear only when most of the kidneys are damaged, and the compensated stage is when no clinical manifestations appear. The compensated stage can be without any clinical manifestations, or only slight weakness, poor performance, chest tightness, breathlessness, cough, etc. Generally, oral medication can be taken to slow down the progress of kidney disease, and the commonly used oral medications are renal rehab, Jin Shui Bao, medicinal charcoal, sodium bicarbonate, compound alpha-keto acid, Bailing capsule, ferrous succinate, etc. However, once renal failure reaches the decompensated stage, clinical manifestations will be aggravated. However, it is recommended that the compensated stage be treated actively to delay the progression of the disease.