Abstract: Disclosed is a high-integration-level plastic tail door, comprising a tail door upper outer plate, a tail light, a tail door lower outer plate, an inner plate, and a high brake light, wherein the tail door upper outer plate, as a whole, is integrated with a spoiler, a tail door windshield, a windscreen decorating member, and a high brake light cover; the tail door upper outer plate is of two layers and is formed by means of double-shot molding, with a first layer being a transparent layer and a second layer being a black non-transparent layer; a first open hole is provided at the position of the high brake light in a black non-transparent layer area; a second open hole is provided in the middle of the tail door windshield; and a hardened coating is arranged on the outer layer of the transparent layer.