The invention relates to a manufacturing method of a novel degradable nontoxic disposable fast food bowl. The following steps are added to a basis of modern manufacturing processes of a disposable paper fast food bowl: nano-grade titanium dioxide is added to paper pulp, and the materials are well mixed; a layer of chitosan-gelatin composite film is uniformly coated in the fast food bowl, and a plasticizer glycerol and a mixture of stearic acid and palmitic acid are added; the mixture is heated in a drying box, and is dried under room temperature, such that a film is formed; and a hygiene zone is arranged at a sealing position between the side of the fast food bowl and the bowl cover plane. With the method provided by the invention, the content of toxic substances in paper can be effectively reduced, and bacterial resistance, water resistance, and corrosion resistance of the food packaging material can be improved. A PE plastic film is replaced by using the chitosan-gelatin composite film. With the production method, the meal box is degradable, non-toxic, harmless, safe, and environment-friendly.