The invention discloses a biaxially-oriented polyester film, which is composed of an upper surface layer, a core layer and a lower surface layer, wherein the middle core layer is composed of polyesterchips; the upper surface layer is an anti-stick layer, and is composed of a glass microbead anti-stick masterbatch and the polyester chips; the lower surface layer is an antistatic layer composed ofan antistatic masterbatch and the polyester chips. The biaxially-oriented polyester film adopts single-sided antistatic treatment, compared with a conventional film coated with a surface antistatic layer, the biaxially-oriented polyester film is less affected by environmental humidity and has a long antistatic effect; in addition, the small particle size glass microbead anti-stick masterbatch is used to reduce the haze of the film and improve the optical properties of the film under the condition of ensuring the normal winding of the film.