The invention relates to the head-up display technical field and relates to laminated glass of a vehicle and a head-up display system, in particular, head-up display laminated glass suitable for 50-degree to 72-degree incidence of P-polarized light, and a head-up display system comprising the laminated glass. The head-up display laminated glass includes an inner glass plate, an outer glass plate and a middle film sheet sandwiched between the inner glass plate and the outer glass plate, wherein the middle film sheet can absorb 2% to 15% of the P-polarized light. According to the head-up display laminated glass of the invention, the middle film sheet can absorb the P-polarized light, so that the intensity of the P-polarized light passing through the middle film sheet can be reduced, and therefore, the brightness of a secondary image can be reduced, and ghosts can be avoided under the incidence of the P-polarized light with a 50-degree incident angle to a 66-degree incident angle, ghosts can be also avoided under the incidence of the P-polarized light with a 50-degree incident angle to a 70-degree incident angle, and ghosts can be still avoided under the incidence of the P-polarized light with a 50-degree incident angle to a 72-degree incident angle, and therefore, the head-up display laminated glass can be fully adaptive to the head-up display requirements of large incident angles; and the head-up display laminated glass has excellent heat-insulating performance.