The invention provides an emergency floodlight. The emergency floodlight comprises a box for mounting a lamp, wherein a plurality of lamp holders are arranged in the front of the box, the structure of each lamp holder comprises a plurality of LED light source sheets circularly arranged on a base, and a plano-convex lens is fixed on each light source sheet; the lamp holders are connected with a circuit board and a power supply in the box sequentially, and a radiator is arranged between the circuit board and each lamp holder; each radiator wholly adopts a hollow cylindrical structure, an edge longer than the lower side is arranged on the upper side of the front end of the box, a baffle board capable of being lifted upwards is hinged below the edge, and a plurality of telescopic support legs are arranged on the box. The emergency floodlight can be moved conveniently, is light in mass, high in luminance, and suitable for various occasions requiring long-distance illumination; a lamp body can be cooled effectively, the effect is remarkable, and damage to components by large heat is avoided.