The invention discloses an irradiation-resistant camera which is composed of an external protection assembly and an internal function assembly. The external protection assembly is composed of an outercylinder assembly, an upper cover assembly and a lower cover assembly. The internal function assembly is composed of a lens assembly, a filtering assembly, an image information acquisition device, ashielding plate, an image information processing device, a left supporting plate, a right supporting plate and a heat dissipation plate. The irradiation-resistant camera has high irradiation resistance, and the cumulative dose can reach 103 Gy; high definition can still be ensured in a strong irradiation environment; the guiding device is arranged, so that the imaging positive direction of the radiation-resistant camera can be quickly determined; all the modules are reasonable in structural layout, and the radiation resistance of the camera is high.