It is possible to have a bad kidney without pain in any location. We define whether the kidney is good or not, as far as surgery is concerned, getting stones and tumors can be bad kidney. But the specific location of pain, generally the vast majority of the 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 do not 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 kidney is definitely bad, the whole kidney function is completely lost, but there is no pain performance. So it is rather narrow to judge the kidney’s good or bad according to the pain and the location of the pain. To determine whether the kidney function is good or not, we need to do urological ultrasound, urine routine, and kidney function at the same time, so that we can basically determine whether the kidney is good or not.