Laser irradiation device for evaluating biological injury effect

The invention provides a laser irradiation device for evaluating a biological injury effect. The laser irradiation device comprises a laser, a light beam expander, a culture plate and a laser power tester, wherein a light emitting hole is formed in the bottom of the shell of the laser; a substrate, a laser emitting head, an irradiation angle adjusting mechanism and a light emitting sleeve are arranged in the shell; the irradiation angle adjusting mechanism is connected with a base column, the end face of the base column is an inclined plane, and a plane mirror is installed on the inclined plane; the irradiation angle adjusting mechanism and the laser emitting head are installed on the substrate; the light emitting sleeve is connected with the edge of the light emitting hole; the light beam expander is connected with the edge of the light outlet hole; a culture groove of the culture plate can directly face the light beam expander; and the laser power tester is positioned on one side of the culture plate. Accor