Pain in the kidney area is one of the common symptoms in urology. The causes of pain in the left and right side of the kidney area are basically the same, and pain in the kidney area can generally be divided into acute pain and chronic pain, as follows: 1. Acute pain: mostly sudden acute attacks, the pain is more intense, mostly renal colic. The pain attack is very painful for the patient, with heavy sweating, also accompanied by nausea, vomiting and other gastrointestinal symptoms. Most common causes are urinary stones, bleeding urinary tumors, clots blocking the ureter, or acute pyelonephritis. In addition to pain in the kidney area, it is often accompanied by frequent urination, urgent urination, painful urination, bladder irritation, fever, etc.; 2. Chronic pain: mostly dull pain, hidden pain, mostly caused by hydronephrosis, kidney stones, or larger kidney cysts, kidney tumors, etc. Therefore, the pain in the kidney area should be combined with whether it is accompanied by other symptoms to further determine what causes it.