To provide a wheelchair that can be folded as a power aid mounted on.

In a wheel chair with a power aid on which the power aid 35 provided with a motor 36 and a driving wheel 38 is installed at the center of the lower part of a foldable wheelchair 1, slider holders 20 are fixed on the left and right of a frame 2 of the wheelchair 1, both ends of a slider 26 slidingly extending and contracting in the longitudinal direction are attached on the above slider holders 20, and holding fixers 31 the power aid 35 on the sliders 26 are attached.