The kidneys are part of the human urinary system, which can excrete harmful substances and wastes from the body in the form of urine through its own reabsorption and filtration functions to maintain the balance of body fluids and electrolytes, while the kidneys also play a key role in regulating human blood pressure. Poor kidney function may be caused by ageing and the decline in the level of our own immune function, along with staying up late, irregular diet, stressful work and various diseases. When kidney function decreases, the following symptoms will appear: 1. dry skin, flaking, itching, dizziness, back pain, mental fatigue, loss of appetite; 2. weakness in urination, increased night urination, morning eyelid edema, hematuria, proteinuria, lower limb edema, hypertension; 3. irregular menstruation in women due to kidney metabolism disorders, sexual dysfunction in men and other symptoms. Kidney is an important organ to maintain human health, when these symptoms appear, you should go to the nephrology department in time and listen to the professional doctor’s advice, you can also go to the nephrology department of a regular Chinese hospital, Chinese medicine also has its own unique method in the treatment of kidney. Remember not to use drugs blindly by yourself, otherwise once the drugs have nephrotoxicity will aggravate the kidney damage.