A film spraying agent for superficial burns and a preparation method therefor, the film spraying agent being prepared from the following ingredients (by weight percentage): silver sulfadiazine (0.1-5%), antibacterial agents (0.1-3%), epidermal growth factor (0.01-0.1%), topical anaesthetics (0.05-1%), borneol (0.1-1%), lithospermum extract liquid (0.5-5%), radix angelicae extract liquid (1-8%), golden cypress extract liquid (1-8%), polygonum cuspidatum extract liquid (2-10%), film-forming agents (0.1-5%), glycerinum (1-10%) and excess water. The preparation method for the film spraying agent comprises: firstly, dissolving the topical anaesthetics, borneol and epidermal growth factors in a water solution of the glycerinum; then, dissolving the silver sulfadiazine, antibacterial agents and film-forming agents in a small amount of water; finally, mixing well with the lithospermum extract liquid, radix angelicae extract liquid, golden cypress extract liquid, polygonum cuspidatum extract liquid and excess water so as to obtain the film spraying agent.