Phototherapy instrument

The utility model discloses a phototherapy instrument, which relates to the technical field of rehabilitation physiotherapy instruments and comprises an irradiation device, a temperature control overload protector and a base. The irradiation device comprises a plurality of laser modules with different optical powers, is arranged on the upper surface of the base and is used for emitting laser with different optical powers; the temperature control overload protector is arranged on the irradiation device and used for powering off the irradiation device when the temperature of the to-be-irradiated object placed on the irradiation device exceeds the set temperature. According to the utility model, the laser generated by the irradiation device penetrates through the cerebral skull of the rat and the mouse and depolymerizes the fibrosome formed by amyloid protein, so that the number and area of age pigments are reduced, A beta oligomer is reduced, and the generation of adenosine triphosphate is enhanced, thereby imp