Clubfoot refers to congenital clubfoot, which is a common pediatric foot deformity that severely affects the appearance and function of the foot. Another part of clubfoot is seen in peroneal nerve palsy. Due to peroneal nerve injury, resulting in paralysis of the peroneal muscles and tibialis anterior muscle group, manifested as the lesion side of the foot can not dorsiflexion, abduction, can not cross the toes and extensor foot turned out, the foot ptosis, which is manifested as a horseshoe inversion of foot. The gait of walking with toes down and toes on the ground is called cross-threshold gait. The cause of common peroneal nerve injury is mostly traumatic injury, such as extrusion, impact, freezing, small hematoma compression, etc. It can also be seen in diabetes, connective tissue disease. Treatment is firstly etiologic, and secondly, B vitamins as well as methylcobalamin capsules can be given for nutritive neurologic applications.