It is clear whether it is pain in the kidney area, which is located bilaterally below the rib cage, on both sides of the psoas major muscle. The pain in the kidney area has the following causes: 1. urinary tract infection, pyelonephritis with pain in the kidney area, and possibly percussion pain, combined with fever and urinary tract irritation symptoms, urinary frequency as well as lumbago. Acute diseases of the kidney, such as acute interstitial nephritis, acute interstitial damage caused by oral nephrotoxic drugs and traditional Chinese medicine, which can increase in size, pain caused by other kidney envelopes, stones in the kidney or stones in the upper ureter, which can also lead to pain in the kidney area, usually colic with vomiting. 3. Chronic kidney diseases, such as chronic nephritis may be accompanied by intermittent kidney area Pain, mainly lumbago, is not very obvious. It will be found through the review of urine routine, kidney function and kidney ultrasound.