The invention relates to tire procuring in-plastic-mat in a large project and a preparation method thereof, belonging to the technical fields of plastic mat and preparation method. The tire procuring in-plastic-mat in a large project in the invention is prepared by the following raw materials in parts by weight: 3-5 parts of zinc oxide prepared by 100 parts of natural gum, 1-3 parts of stearic acid, 1-3 parts of rubber antiager RE, 1-3 parts of rubber antiager DFC-34, 0.4-0.8 part of rubber promoter CZ, 0.1-0.4 part of rubber promoter M, 0.1-0.4 part of rubber promoter TMTD, 10-14 parts of carbon black N660, 10-14 parts of white carbon black, 2-5 parts of rubber oil, 1-4 parts of rubber binding agent A, 1-4 parts of resorcinol, 3-7 parts of C5 resin, 2-6 parts of rubber reinforcing agent QS-3, 1-3 parts of dispersant, 1-4 parts of sulphur and 0.1-0.2 part of rubber scorch retarder PVI. The product in the invention thoroughly solves the problem of adhesive strength of tread rubber and the casing in-plastic-mat in tyre prevulcanization in large-scale projects, and avoids the occurrence of bodiless surface of the tyre in normal use.