The invention discloses a sewing-less integral surface cover foaming structure, which comprises a foaming body and a surface cover attached to a surface of the foaming body facing to a passenger. The sewing-less integral surface cover foaming structure is characterized in that the profile of the surface of the surface cover facing to the passenger of the foaming body is divided into a plurality of surface cover tailoring pieces, and each tailoring piece of the surface cover and the foaming body are directly integrated by a PIP manner. The invention also discloses a mold and method for preparing the sewing-less integral surface cover foaming structure. The sewing-less integral surface cover foaming structure solves the problems that wrapping is required, a manual cost required for seat wrapping is high, an appearance problem is frequent, and wrinkles are easily generated in a production process of a traditional automobile seat surface cover and foaming, also solves the problem of high manual cost and low efficiency caused by a fact that the traditional automobile seat surface cover needs to be sewed, the problem of difficulty in location of the foaming mold and the surface cover since a traditional PIP technology is applied to large foaming products, and the problem that the traditional automobile seat production mode cannot meet customized requirements of a client.