The invention belongs to the technical field of metal composite sheet strips, and particularly relates to a method for preparing a metal composite sheet strip through electroplating deposition and rolling. The method comprises the following steps of 1, surface treatment, 2, laminating, 3, electroplating deposition, 4, blank manufacturing, 5, rolling, 6, thermal treatment, and 7, finishing. Electroplating deposition is combined with a traditional rolling process, a to-be-compounded surface of a metal sheet strip base material is deposited with a clad layer, one part of the deposited clad layeron the surface of the base material generates a hooking effect and a riveting effect with base material metals, the other part of the clad layer and an contact interface between the base material metals generate diffusion, the clad layer generating the hooking effect and the riveting effect with the base material metals prompts the coplastic deformation of the special-shaped metal sheet strips andthe clad layer under the action of a rolling force, the action area of the shearing force of the surfaces of the metals is remarkably increased, the numerical value is increased, the shearing actionof the metals is enhanced, the fracture of the interface between the metals is accelerated, the metallurgical welding is prompted, and the comprehensive mechanical performance is further improved through the combination with the post heat treatment.