Disclosed is a functional chair having acupressure balls. According to the present invention, the purpose of the functional chair is to correct the distortion of the spine only by carrying out simple movements of opening or closing armrests in two directions within a limited space and to correct a sitting posture of a user, including: a chair seat a back of a chair coupled to one side of the chair seat and extended in the upward direction a pair of acupressure plate rotary shafts which is parallel to a vertical axis at a position ambilaterally spaced at predetermined distance from the center of rear surface of the back of the chair a pair of acupressure plates which rotate around the rotary shaft of the respective acupressure plates and a pair of armrests coupled and fixed to one side of the respective acupressure plates, and extended to the front of the back of the chair, wherein: a plurality of operating holes formed by being perforated on the front of the back of chair at positions symmetrical to both sides with respect to the vertical axis of the center of the back of the chair is further included a sleeve for covering the acupressure plate rotary shaft is positioned along a lengthwise direction on the respective acupressure plates the acupressure rotary shaft penetrates the respective acupressure plates and is fixed such that the respective acupressure plates rotate on the respective acupressure plate rotary shafts a plurality of horizontal extension parts are provided on the respective acupressure plates and extended at a certain length in the perpendicular direction of the sleeve acupressure ball mounting parts for fixing acupressure balls are provided at the end of each of the horizontal extension parts and acupressure balls are fixed to rotate on each of acupressure ball mounting parts.
