The invention provides a surface protective film for a mobile phone screen and applicable to low-temperature environments. The surface protective film sequentially comprises wear-resistant coating (1), a polymer film layer (2), a blue-light-resistant layer (3), an adhesive layer (4) and a release liner (5) from top to bottom, wherein the polymer film layer (2) sequentially comprises a polyether polyurethane layer (2-1), a polyether-polyester type polyurethane layer (2-2) and a polyether polyurethane layer (2-3), and the composition of the polyether polyurethane layer (2-1) is identical to the composition of the polyether polyurethane layer (2-3). The surface protective film has the advantages that the problems of low-temperature resistance, paving performance and use and transportation performance of the surface protective film are solved, and excellent technical effects are achieved.