There are several possible causes of low back pain: first, muscle and fascia diseases, when there is lumbar muscle strain or lumbar dorsal fasciitis, low back pain can occur, often due to exertion and cold, it is necessary to conduct relevant physical examination and lumbar spine examination to exclude other diseases for diagnosis and treatment; second, lumbar spine diseases, when there is lumbar disc herniation, lumbar spinal stenosis or lumbar spine slippage in the lumbar spine, there can be significant pain in the waist. When the lumbar spine has lumbar disc herniation, lumbar spinal stenosis or lumbar spine slippage, there can be obvious pain in the waist, accompanied by hip discomfort and lower limb neuralgia, CT and MRI of the lumbar spine should be performed for early diagnosis and treatment; third, kidney diseases, when the kidney has tumors, inflammation or cysts, stones, there can also be lumbar pain, accompanied by hematuria and proteinuria, then CT and ultrasound of the kidney should be performed for early diagnosis; fourth, kidney deficiency, when the kidney is weak, the kidney is weak. Fourth, kidney deficiency, kidney deficiency can also appear lumbar pain, often accompanied by weakness of the knees, then we should find a Chinese medicine doctor for pulse diagnosis, early treatment of kidney supplementation.