The invention relates to the technical field of automobile accessories, in particular to an automatic transfer printing process for a surface of an automobile interior decoration part. The automatic transfer printing process comprises the steps that (1) mold treatment is carried out, specifically, a mold cleaning agent is used for scrubbing a mold, then a nitro paint and/or a vinylidene chloride paint is used for brushing the mold, and the mold is subjected to blow-drying; (2) an adhesive film is baked to soften the adhesive film; (3) the softened adhesive film is subjected to hot press forming or vacuum forming by using a forming device; (4) remaining material on the adhesive film subjected to vacuum forming is cut off; (5) an injection-molded automobile decoration shell is taken and position calibration of the shell is completed; and (6) the injection-molded automobile decoration shell is obtained by using an injection molding device, and the adhesive film and the automobile decoration shell are fixedly connected together to form an automobile decoration finished product. According to the transfer printing process, accurate positioning of a transfer printing pattern of the surface of the automobile interior decoration shell is realized by adopting the above process, the surface, obtained through transfer printing, of the automobile interior decoration shell is smooth and attractive, and in addition, an operator does not need to manually participate in the automobile interior decoration shell surface transfer printing, so that the production efficiency of transfer printingof the surface of the automobile interior decoration shell is improved.