Fireproof composite film

The utility model discloses a fireproof composite film, which sequentially comprises an upper protective layer, a first reinforcing layer, a glass fiber layer, a second reinforcing layer and a lower protective layer from top to bottom, wherein the upper and the lower protective layers are both polytetrafluoroethylene layers. Through the combination of the glass fiber layer with the polytetrafluoroethylene layers, the fireproof composite film can be guaranteed to have good fireproof performance, relatively high tensile strength, excellent ageing-resistant performance and excellent self-cleaning performance, and the service life of the fireproof composite film can be prolonged; and through the design of the first and the second reinforcing layers, the glass fiber layer can be connected with the upper and the lower protective layers more firmly, so that the performance of the fireproof composite film is further improved.