The invention relates to a health-care physical therapy device, particularly a vehicle carried multifunctional physical therapy device. The physical therapy device comprises a chassis and a control device including a waveform generating circuit, a shaping circuit, and an output circuit, wherein the bottom of the chassis is a plane, the transverse (width direction) cross section of the chassis is U-shaped, the longitudinal (length direction) cross section is arc-shaped, and the rack curvature of the arc shape is the physiologic curvature of human body waist spines. The control device also includes an inversion circuit. The arc-shaped rack of the physiologic curvature of the human body waist spines is sequentially provided with a buffer layer, a Chinese traditional medicine layer, a pulse belt layer, and a field effect belt layer. The health care physical therapy device has the advantages of novel and reasonable design, and convenient application, and has the effects of freely stretching and alleviating the spine, reducing the pressure of the intervertebral discs, and maintaining health and vitality of a waist. The health care physical therapy device used in the backrest of a long distance driver has the effects of relieving the pressure in the lumbar intervertebral disc, fully resting the intervertebral discs, relaxing the muscle and the ligament in the waist, forming the negative pressure due to natural traction thereof, and gradually resetting the protruded intervertebral discs.