A glass door coated with a film comprises heat reflecting glass serving as outer layer glass, and panel float glass serving as inner layer glass. A square partition frame defined by four partition strips is arranged between the outer layer glass and the inner layer glass. A closed cavity is formed in the square partition frame. Door frame strips are embedded in the edges around the outer layer glass and the edges around the inner layer glass to form the glass door. The outer side surface of the outer layer glass is coated with an antifogging agent film layer. The inner side surface of the outer layer glass is plated with at least one heat reflecting film layer to form the heat reflecting glass. The partition strips are aluminum-based strips or rubber-plastic strips and are bonded to the inner surfaces of the outer layer float glass and an inner layer of float glass through glass cement. The outer sides of the partition strips are sealed through butyl rubber strips so that a closed hollow space can be defined by the four partition strips. The glass door has the advantages of being reasonable in structure and composition, convenient and reliable to use and low in cost, having a good heat reflecting effect and an antifogging effect, and the like.