The utility model relates to a human body spin stretching traction device, which comprises a base group, a seat base group, a seat back group and a supporting device. The seat base group fixes the buttocks of the human body with a seat plate, and the bottom of the seat plate is pivotally connected to the front pillar of the base group, the chair The back group is provided with an actuating rod on the back side of the backboard, and a connecting rod group is pivotally connected between the base group and the seat plate and the actuating rod, and the supporting device is connected to the upper part of the actuating rod to support the upper part of the chest of the human body upward； When the back of the human body pushes the back plate to push the back plate, the upper part of the actuating rod drives the supporting device to move backwards and upwards, and the lower part of the actuating rod pushes the connecting rod group and the seat plate forward, so that the back side of the human body and the back side of the seat plate face downward. The pendulum is used to perform the spinal traction by using the gravity generated by the body sitting posture to move downward and tilt, which can prevent the spine from being damaged due to excessive traction force, and the tractor is suitable for the human body to operate in a sitting manner, and can be conveniently seated and stood up. And reduce the footprint.一種人體脊椎拉伸牽引器，包含有基座組、椅座組、椅背組以及支持裝置，椅座組以座板固定人體之臀部，座板底部樞接於基座組之前支柱上，椅背組在背板後側設有作動桿，在基座組與座板、作動桿之間樞接有連桿組，而支持裝置連接於作動桿上段，以朝上支持人體之胸部以上部位；當人體之背部往後施力推動背板，使作動桿上段帶動支持裝置朝後上方擺移，且作動桿下段往前推動連桿組與座板，使人體之臀部及座板後側朝下方擺移，以利用身體坐姿重量朝下擺移傾斜時所產生之重力進行脊椎牽引，可防止脊椎因牽引力量過大而導致傷害，而且牽引器適合人體以坐姿方式操作使用，可方便坐置與起立，並減少佔地空間。
