Walking lumbago is mainly caused by muscle strain, lumbaris major is the only muscle directly connected to the lower limbs from the trunk, one end is connected to the lumbar spine, the other end is connected to the femur, its structure determines that it has a more important function, which is to stabilize the lumbar spine. In the process of walking, the psoas muscle to play a role in stabilizing the lumbar spine, to complete the action of lifting the leg to step, if the psoas muscle is too tight when stepping, it will not be able to maintain the stability of the spine, the waist bends forward, walking for a longer time, the muscles of the waist will appear strain. When turning to support at the end of the stride, the waist right back overstretched, resulting in excessive load on the lumbar muscles, long non-stop walking, repeated such actions, it is easy to produce back pain, which is related to the usual not much exercise, poor muscle tolerance, not too much endurance, so easy to fatigue.