H1/H2 adopts the international advanced photoelectric technology, taking the essence of laser linear polarization, avoiding the shortcomings of single laser wavelength and low therapeutic effect, taking the essence of strong near-infrared penetration and high composite wavelength effect, avoiding the defects of near-infrared scattering, easy absorption and no polarized light, so it is also called "ultra laser pain treatment device". The effective depth of action on human tissues can reach more than 5cm, and the maximum degree of polarization can reach more than 99%. It is suitable for improving local blood circulation, promoting swelling regression and analgesia during the recovery period of soft tissue sprain and contusion. Effective non-invasive treatment for inflammatory, neurological and traumatic diseases of the human body can be used as a combination therapy and alternative therapy of nerve block therapy.