The kidney is an important organ of the human urinary system. In addition to excretory functions, it also has the function of regulating water, electrolytes (such as potassium, sodium, chloride, calcium, etc.) and acid-base balance. For the general public, how to protect the kidney? How to prevent chronic kidney disease is a common concern. The following points should be done: 1. Drink enough water without holding urine. Urine stored in the bladder for too long, it is easy for bacteria to multiply, and bacteria are likely to infect the renal pelvis via the ureter. Drink enough water every day and timely urination can not only prevent the occurrence of urinary tract infections, but also less likely to occur urinary stones. 2, balanced diet, do not overeat. People eat a lot of plant and animal protein, the final metabolites – uric acid and urea nitrogen need to be eliminated by the kidney burden, so binge drinking and overeating will increase the extra burden on the kidneys, which is detrimental to kidney function. 3, avoid drug abuse. A variety of drugs, chemical toxins can lead to kidney damage. Such as long-term large amounts of painkillers, inappropriate application of aminoglycoside antibiotics, long-term, overdose of herbs containing aristolochic acid, etc., can slowly cause kidney function damage. 4. Pre-pregnancy examination. Women should be checked for kidney disease and kidney function before pregnancy, and if they have a significant degree of kidney disease (sometimes they don’t even know it), they should discuss whether they can get pregnant with a kidney specialist. Otherwise, if you get pregnant blindly, your kidney disease may deteriorate quickly and cause renal insufficiency. 5. Timely removal of infection foci. When there is inflammation in the throat and tonsils, antibiotics should be used immediately and thoroughly under the guidance of a doctor, otherwise streptococcal infections are likely to induce kidney disease, especially in children. 6. Control risk factors. Eat a light diet, reduce salt intake, plan to adhere to daily physical activity and physical exercise, control weight, prevent metabolic diseases such as hypertension, diabetes, high uric acid, obesity and hyperlipidemia, and prevent kidney damage. Once the above diseases appear, they should be actively controlled under the guidance of a specialist, adhere to the corresponding low salt, low sugar, low purine and low fat diet, and closely monitor blood pressure, blood glucose, blood lipids, blood uric acid and other indicators. Monitor urine routine, urine microalbumin and kidney function at least once every six months in order to detect early kidney damage. 7, dishes should not be too salty. Although sodium chloride is an inorganic salt indispensable to the human body, but eat too salty, so that the concentration of sodium ions in the blood is too high, the kidneys must discharge the excess out of the body, which will increase the burden on the kidneys and damage, especially people with hypertension or a family history of hypertension, the amount of salt consumption should be less. 8, drugs that can damage the kidneys, such as sulfonamides, kanamycin, gentamicin, polymyxin B, etc., should be applied under the guidance of a doctor. 9, cold season, should keep the waist warm, from the wind and cold, hot season, do not be too greedy cold sleep, in order to protect the kidney tissue has good blood circulation. 10, women should pay more attention to vulvar hygiene. Develop good personal hygiene habits to prevent urinary tract infections. 11, found puffy eyelids, lumbago, painful urination, urinary urgency and frequency and unexplained fever, should promptly go to the doctor, check the urine, early diagnosis and early treatment and reassurance.