Bad lumbar spine can be a disease of the lumbar spine itself, not necessarily related to the kidneys. The more common clinical conditions are lumbar muscle strain, lumbar disc herniation, lumbar spine osteoporosis, lumbar small joint disorders, and myofasciitis of the lumbar back can cause discomfort in the lumbar spine, and these lesions have nothing to do with the kidneys. Of course, there are kidney diseases that can also cause discomfort in the lumbar spine, such as urinary stones and serious urinary tract infections, but this pain will appear in the upper part of the lumbar spine, and the symptoms can be relieved after more bed rest and avoiding strain and strain, unlike the above-mentioned lesions of the lumbar spine itself. In this case, corresponding treatment such as lithotripsy or anti-infection is needed to relieve the clinical symptoms. And from the perspective of Chinese medicine, if the lumbar spine is also uncomfortable the situation may be kidney deficiency, but it is also because of the concept of Chinese medicine, the kidney deficiency here is not the modern medical talk about the kidney function does not work or what lesions, so the two meanings completely need to be distinguished.