Abstract: The disclosure provides a protective visor applicable to multiple operation environments for dust prevention, anti-shock glasses, chemical defence and ray radiation protection. The protective visor comprises a headband (5), a face shield (1), protective goggles (6), a light shading screen (4), a light grid (8) and a housing (2), which are connected to each other. The light shading screen (4) and the light grid (8) constitute a light refraction and transmission device for refracting and transmitting the light, which includes a light aperture processed to have a curved surface and located at the front and upper end portion of the housing (2). The light aperture has a serrated lattice shutter structure, and the light shading screen (4) is disposed at the outer side of the light aperture. The protective visor can effectively prevent foreign splash, and absorb radiant heat and certain ultraviolet rays to protect an operator's face.