Abstract: A FRP plate and manufacturing method thereof are provided in the invention. The FRP plate comprises: a lower layer of polyester carrier film; a mixed layer located on the lower layer of polyester carrier film, which is formed by curing a melted polyester resin in which a glass fiber reinforced material is embedded; and an upper layer of polyester carrier film positioned on the mixed layer. Furthermore, a release fabric is disposed between the mixed layer and the upper layer of polyester carrier film. When the FRP plate of the invention is used, the upper layer of polyester carrier film and the release fabric are torn off so that the surface of the mixed layer is rough, therefore, the adhesion between the FRP plate and other building materials will be greatly improved, and thus the application prospect of the FRP plate is broader.