It is possible to have a bad kidney without pain in any location. When we define a bad kidney, as far as surgery is concerned, you can have a bad kidney if you have a stone or a tumor. However, the specific location of pain, generally the vast majority of the two sides of the waist, the junction of the spine and the 12th rib, this location has percussion pain, the vast majority of the pain is caused by stones. Tumors don’t show up as pain, and when they do, they are basically close to the advanced stage. At the same time, many bad kidneys do not show pain, such as uremia, his kidneys are definitely bad, the whole kidney function is completely lost, but there is no pain. Therefore, it is narrower to judge the kidney function based on the pain and the location of the pain. To determine whether the kidney function is good or not, we need to do ultrasound of the urinary system, urine routine, and also do kidney function, so that we can basically determine whether the kidney is good or not.