A method for manufacturing a carrier tray includes softening and disposing a plastic film on a first mold, wherein the first mold includes a top surface and a first lateral surface, the top surface includes a recession and a first edge, the first lateral surface is connected to the top surface and extends from the first edge, and the first lateral surface and the top surface form a first included angle; attaching the plastic film to the top surface and the first lateral surface; disposing a restorer on an outer side of the first mold; separating the first mold from the plastic film, wherein the plastic film is pushed by the first lateral surface such that the restorer is moved from an initial position to a final position; and pushing the plastic film from the final position to the initial position by the restorer; and cooling the plastic film.