The invention relates to the field of head-up display technologies, particularly relates to a head-up display system involving film plating, and specifically discloses a head-up display system with a beautiful film surface reflected color. The head-up display system comprises a projection light source and laminated glass, wherein the projection light source can produce P-polarized light; a transparent nanofilm is deposited on the surface, farthest from a thermoplastic membrane, of an inner glass plate of the laminated glass; the P-polarized light can be incident onto the transparent nanofilm; and the transparent nanofilm comprises a medium refractive index layer, a high refractive index layer, a low refractive index layer and a outermost layer which are sequentially deposited from the inner glass plate to the outside. The head-up display system can achieve the effect of double image free at an incident angle ranging from 50 to 68 degrees, can even achieve the effect of double image free in the case that, for instance, a high incident angle is greater than 70 degrees and even greater than 73 degrees, the overall structure and process of the head-up display system are simple, the cost is low, the appearance of the head-up display system is beautiful, the reflected color of a coating film surface is beautiful and even the omnidirectional reflected color is beautiful, and the color appears in light blue or a neutral color.