To reduce the burden of an attendant by providing a sitting chair, with which a one-side armpit pickup frame is provided at the upper part of a side fitting plate and a pedestal is provided at the lower part, on a lift driving frame, which is mounted on a mobile wagon, so as to freely rotate, rise and fall and so as to freely pivotally move up and down.

Concerning a sitting chair 1, a one-side armpit pickup frame 3 is provided at the upper part of a side fitting plate 2, and a pedestal 4 is provided at the lower part. Namely, the sitting chair 1 is provided for helping a patient lying on the bed sit up in the bed by scooping the one-side armpit with the one-side armpit pickup frame 3 while fitting the pedestal 4 under the buttocks of the patient. A mobile wagon 6 is provided so as to freely move by providing wheels 8 on the lower surface of a base 7. Concerning a lift driving frame 9, a frame 11 for lift is linked to a lift driving device 10 to be ordinarily used such as pinion rack mechanism or cylinder. Besides, at the top end part of the frame 11 for lift, a rotary supporting panel 13 is provided while being idly fitted to a rotary shaft 12 attached to the one-side armpit pickup frame 3 or side fitting plate 2 of the sitting chair 1. On the frame 11 for lift, the sitting chair 1 can move so as to freely rotate, rise and fall and so as to freely pivotally move up and down.