To solve a problem of needing to operate a locking device to fix a wheelchair body after lifting a driving wheel using a shift mechanism when getting on and off to prevent rear wheels from being lifted by the force of a spring that pushes down the driving wheel due to a problem in a conventional pedaling wheelchair wherein the locking device for fixing the wheelchair body does not work when getting on and off.

A buffer spring case is connected between a driving arm mounted with the driving wheel and a seat plate mounted under a seat, and the driving wheel is pressed down to the ground surface by a rider's weight.