In clinical practice, most patients with foot pain are suffering from herniated discs in the lumbar 5-sacral 1 stage, because the area innervated by the nerve roots in the lumbar 5-sacral 1 area is the dorsum of the foot, the sole and the outer edge of the foot. When the herniated nucleus pulposus is produced, it can stimulate the nerve roots in the lumbar 5 sacral 1 area, which will lead to foot pain in the innervated area. It will also be accompanied by loss of sensation in the skin of the lower extremities, loss of muscle strength, and loss of dorsiflexion of the bunions, etc. A clear diagnosis can be made by taking an MRI or CT film of the lumbar spine. In addition, if the patient has chronic strain or acute trauma to the knee joint, resulting in common peroneal nerve palsy, it can also produce nerve compression and foot pain, as well as dorsiflexion and plantar flexion limitation of the ankle joint.