The present disclosure relates to an encapsulation assembly for automotive glass including first glass, an encapsulation component, a plastic guiding rail, a sealing strip, and a decorative layer. Second glass is slidably connected in the plastic guiding rail. One end of the plastic guiding rail is fixedly connected to an edge of the first glass by means of integrally injection-molding the encapsulation component. The other end of the plastic guiding rail is provided with a guiding groove for guiding sliding of the second glass. The guiding groove includes an upper wall and a lower wall opposite to each other. The sealing strip is fixed between the upper wall and the lower wall. The second glass and the sealing strip slidably cooperate. A side of the plastic guiding rail facing outside of a vehicle is provided with the decorative layer by injection molding.