Abstract: The Invention discloses a foldable and track-changeable training chair for coordinated exercises of upper and lower limbs, comprising: a seat, a driving device below the seat and racks on both sides of the seat; an out-stretched driving shaft and an accessory shaft are arranged on each side of the driving device; one end of the crank of the seven-bar mechanism on both sides of the seat is fixed to the driving shaft, the other end is hinged to the head end of the first connecting rod to form a revolute pair. The Invention has a simple structure and wide usage.