The kidneys maintain the body’s water-electrolyte balance and excrete metabolic waste in a timely manner to maintain the body’s acid-base balance. The kidneys have certain secretion function, which can secrete erythropoietin to maintain the normal number of red blood cells. So when the kidneys are not good symptoms: 1, edema, can be manifested as edema of the limbs and face, abnormal body water excretion, resulting in water accumulation in the body and manifested as edema. 2, reduced urine volume, poor kidney function, water electrolyte filtration is reduced, which is manifested as a reduction in urine output. The amount of urine excreted can even reach less than 100ml in 24 hours. 3. renal anemia, poor kidney function leads to reduced erythropoietin secretion and symptoms of anemia. 4. elevated metabolites in the body, resulting in gastrointestinal and digestive tract symptoms. Such as urea nitrogen, creatinine and other metabolic wastes cannot be filtered out of the body through the kidneys and accumulate in the body, which can be manifested as fatigue, weakness, nausea, vomiting, dizziness and other symptoms. 5. Due to poor kidneys, a large amount of protein overflows out of the body and causes human hypoproteinemia. Patients may have obvious edema, progressive aggravation, and accompanied by reduced immunity.