The invention provides a microprism-type reflective film. The microprism-type reflective film comprises a transparent basal film and a microprism layer. The microprism layer is arranged on a surface of the transparent basal film. The microprism layer is a combination of a plurality of microprism units. Each microprism unit comprises first prisms and a second prism. Each first prism is a triangular pyramid structure which is formed after cutting off one angle at a vertex angle and a base angle respectively and possesses a bottom surface, three side surfaces, three bottom cross sections and one top cross section. The second prism is a triangular pyramid structure and possesses a bottom surface, three side surfaces, one vertex angle and three base angles. A bottom surface of each first prism and a bottom surface of the second prism are combined with the transparent basal film. The second prism is arranged in a gap of the adjacent first prisms. By using the microprism-type reflective film, a viewing angle can be increased and demoulding difficulty is reduced.