A method for manufacturing a polyester film, wherein the polyester film thus obtained has a laminated structure, and at least two polyester film layers stacked upon each other are provided in the polyester film having the laminated structure; wherein the method is characterized in that each of the polyester film layers is produced through recycling and reusing a recycled polyester material, characterized in that the method for manufacturing each of the polyester film layers comprises: physically reproducing a part of the recycled polyester material and granulating the same to obtain a plurality of physically recycled polyester chips; chemically reproducing another part of the recycled polyester material and granulating the same to obtain a plurality of chemically recycled polyester chips, wherein the step of chemically reproducing another part of the recycled polyester material further includes: depolymerizing the recycled polyester material to obtain a raw material mixture, and then repolymerizing and granulating the raw material mixture to obtain the plurality of chemically recycled polyester chips, wherein the plurality of chemically recycled polyester chips further include chemically recycled electrostatic pinning polyester chips, and wherein the chemically recycled electrostatic pinning polyester chips contain at least one kind of electrostatic pinning additives, and the electrostatic pinning additives are metal salts; and mixing and melting the plurality of physically recycled polyester chips and the plurality of chemically recycled polyester chips to form the polyester film layer; wherein, based on 100 parts by weight of a total content of the polyester chips, a content of the chemically recycled electrostatic pinning polyester chips of the plurality of chemically recycled polyester chips is between 5 and 35 parts by weight; wherein the at least two polyester film layers are a white polyester film layer and a black polyester film layer, respectively, and wherein the white polyester film layer further includes a white additive, and the black polyester film layer further includes a black additive. physically reproducing a part of the recycled polyester material and granulating the same to obtain a plurality of physically recycled polyester chips; chemically reproducing another part of the recycled polyester material and granulating the same to obtain a plurality of chemically recycled polyester chips, wherein the step of chemically reproducing another part of the recycled polyester material further includes: depolymerizing the recycled polyester material to obtain a raw material mixture, and then repolymerizing and granulating the raw material mixture to obtain the plurality of chemically recycled polyester chips, wherein the plurality of chemically recycled polyester chips further include chemically recycled electrostatic pinning polyester chips, and wherein the chemically recycled electrostatic pinning polyester chips contain at least one kind of electrostatic pinning additives, and the electrostatic pinning additives are metal salts; and mixing and melting the plurality of physically recycled polyester chips and the plurality of chemically recycled polyester chips to form the polyester film layer; wherein, based on 100 parts by weight of a total content of the polyester chips, a content of the chemically recycled electrostatic pinning polyester chips of the plurality of chemically recycled polyester chips is between 5 and 35 parts by weight; wherein the at least two polyester film layers are a white polyester film layer and a black polyester film layer, respectively, and wherein the white polyester film layer further includes a white additive, and the black polyester film layer further includes a black additive.