The most common symptoms of kidney injury are edema, change of urine output, lumbar discomfort and so on, followed by water-electrolyte disorder, hypertension, loss of appetite and other symptoms. 1. Edema, due to the decrease of glomerular filtration rate and the obstacle of tubular reabsorption caused by renal injury, which leads to the obstacle of normal metabolism of sodium and water, and can cause edema, which usually starts from the eyelid area, and then spreads all over the body. 2. Changes in urine output, after kidney injury, due to the obstacle of water and sodium metabolism, usually accompanied by a decrease in urine output, and serious anuria can occur. 3. Lumbar discomfort, acute kidney injury may appear lumbar pain and other symptoms. 4. Hydroelectrolyte disorders: water and sodium retention, resulting in dilutional hyponatremia; decreased ability of renal potassium excretion, prone to hyperkalemia; with the progression of the disease, renal phosphorus excretion is reduced, resulting in hyperphosphatemia, hypocalcemia and so on. 5. Hypertension: mostly due to water and sodium retention, increased renin-angiotensin and/or insufficient production of certain vasodilating factors. 6. Loss of appetite: toxins invade the mucous membrane of digestive tract, which can lead to impaired digestive function, mainly manifested by lack of appetite, nausea, vomiting, and urine taste in the mouth. Kidney injury patients are recommended to regular hospitals, standardized treatment under the guidance of physicians.