The invention discloses a light guide plate for an automobile display screen, and relates to the technical field of light guide plates. The light guide plate comprises a main body, a plurality of light concentrating columns and a point reflecting group are fixedly connected to a surface of the main body; a reflective housing is fixedly connected to an end surface of the main body; the reflective housing includes a heat dissipation plate; an end surface of the heat dissipation plate is fixedly connected with a heat dissipation layer; one end, positioned far away from the heat dissipation plate,of the heat dissipation layer is fixedly connected with three heat dissipation fins; one end, positioned far away from the heat dissipation layer, of the heat dissipation plate is fixedly connected with four lamp caps; the point reflecting group includes a plurality of reflecting lenses; each reflecting lens is a convex circular lens; the reflecting lenses are distributed in a sparse to dense manner on the surface of the main body in a direction away from a light source. The light guide plate disclosed in the invention can help solve a problem that a conventional light guide plate light source is gradually attenuated due to influence of distance during light scattering processes and therefore light guided out via the light guide plate is low in light evenness and non-uniform in brightnessvia design of unequal distance among the light concentrating columns, a micro concave-convex curved surface structure design and sparse-dense design of the point reflecting group.