In every day’s clinical work, whether it is lumbar disc herniation, or sacroiliac joint subluxation, or patients with lumbar muscle strain, the existence of long and short feet can be seen at any time. The reason for its existence, one is acute sprain or disc herniation and other reasons, resulting in pain reflex caused by the pain side of the shortening, compensatory appearance of long and short feet; two is because of the usual way of life, such as wearing high heels or crossing the legs, etc., first appeared long and short feet caused by lumbar vertebrae stress imbalance, resulting in lumbar spine a series of lumbar and leg pain lesions. Regardless of the above two what is the former, they are often related to each other, affect each other and aggravate their pain symptoms. At this point we clinically have to analyze the cause, which is very important. If the short and long legs are caused by the first lesion, there is often no bad lifestyle, and the short legs often coincide with the side of the lesion, which can be clearly differentiated according to the yin and yang legs when doing the examination. If the long and short legs appear first and then a series of lumbar spine lesions appear later, often the short legs are opposite to the lesion side. Sometimes the distinction is not always so clear, that does not matter, as long as you can look for the pain point and follow certain methods to correct the pelvic deviation and short and long legs, to achieve a cure for the clinical symptoms can be. But how to correct the short and long feet, which is a matter of mechanics, can be decided according to the principle of balance and the search for pain points, which is very important and critical.