The so-called kidney deficiency is divided into kidney yin deficiency and kidney yang deficiency, and its performance symptoms can be manifested as waist and knee weakness, but in clinical work, the majority of waist pain is not caused by kidney deficiency, but due to acute and chronic injury to the waist, the most common clinical cause of waist pain is lumbar muscle strain, mainly due to prolonged improper bending posture, and The most common clinical cause of lumbar pain is lumbar muscle strain, mainly due to prolonged improper bending posture and improper sitting posture. Another common cause of lumbar pain is lumbar disc herniation, which is also very common in daily life, as well as less common ones, such as lumbar spondylolisthesis, lumbar transverse hypertrophy and lumbar isthmus discontinuity.