Walking assistant wheelchair is a handicapped individual assistant implement which structure can be reconstructed by mechanism.It is designed that a walking assistant wheelchair integrates wheelchair and walking functions.It not only can march on the ground as wheelchair depended on the physical strength of intact upper limbs

but also can realize up and down stairs depended on the physical strength of intact upper limbs and assisted by stair railing.The problems on double-rocker mechanism design and transmission in wheelchair state and parametric calculation on dual legs in coming up and down stairs are solved.