The invention discloses a
nursing chair device and an operation method thereof, the
nursing chair device comprises a chair seat, a chair back
assembly, a transmission device and a roller
assembly, the chair back
assembly comprises a left side back, a middle back and a right side back, the transmission device comprises a support frame, a transmission shaft, a chain wheel, a chain, a motor and a motor seat, and the roller assembly comprises a roller frame, a roller frame shaft, a positioning ring, a positioning block, a square shaft and a
massage roller. The lower part of the chair seat has legs, both sides of the chair seat have armrests, and the front of the seat has footrests. The upper part of the left back is provided with a left back surface; the right side of the left back surface is provided with a left back
cam surface, the middle of the left back surface is provided with a left middle cavity, the upper part of the middle back is provided with a middle back surface, both sides of the middle back surface are provided with middle back
cam surfaces, the middle of the middle back is provided with a middle back middle cavity, and the upper right back has a right back surface, a right back
cam face is arranged on the left side of the right back face, and a right back middle cavity is formed in the middle of the right back face.