The invention discloses a PVDC compound for packaging cooked products. The PVDC compound is prepared from the following raw materials in parts by weight: 100 parts of PVDC resin, 3-5 parts of isobutene and isoprene copolymer, 3-6 parts of naphthenic oil, 2-4 parts of epoxidized soybean oil, 1-2 parts of stearic acid, 0.2-1 part of sodium alginate, 2-3 parts of magnesium oxide, 5-8 parts of modified imvite, 1-2 parts of talcum powder, 0.1-0.3 part of p-benzoquionone dixoime and 0.2-0.5 part of 2,2'-dithio bisbenzothiazole. The invention provides a preparation method. The invention has the beneficial effects that the modified polymer and auxiliaries are added for modifying PVDC and a special preparation method is adopted for preparing the PVDC compound; compared with a traditional PVDC film,a packaging film prepared according to the method has the advantages that the mechanical properties are promoted to a certain extent and the barrier property thereof is also obviously improved; the guarantee period of the cooked products packaged with the packaging film made from the PVDC compound disclosed by the invention is obviously prolonged.