The present invention discloses a prismatic lens, a dual-directional prism module and a display device having the same. The dual-directional prism module comprises two prismatic lenses, each prismaticlens is divided into a plurality of subareas, each subarea is internally provided with a plurality of arranged zigzag sub prisms located at the surface of the same side of the prismatic lens, there is a first inclination angle at the arrangement direction of the sub prisms in the adjacent subareas of the same prismatic lens, the thickness direction of the subareas of one prismatic lens are in one-to-one correspondence with the thickness direction of the subareas of the other prismatic lens in the prismatic lens, there is a second inclined angle at the arrangement direction of the sub prisms of the corresponding subareas, and there is an acute angle between the extension direction of sub prisms and the length direction of the prismatic lenses. Therefore, the prismatic lens, the dual-directional prism module and the display device having the same can effectively avoid too large deformation of the prismatic lenses with swelling-shrinkage and deformation, better reduce the deformation when the prismatic lenses are subjected to reliability test, and the arrangement of the second inclined angle can better ensure the lighting effect in the view angle range.