Aiming at the problem of long time consumption or inability to consider the heating sequence when traditional numerical methods were used to predict the deformation of curved panels with multiple heating wires, a finite element model coupled with electromagnetic-thermal-structure of steel plates was used to obtain the residual strain of a single heating wire, which was equivalent to a temperature load, and applied to the fixed strain zone. Then, the overall deformation of the steel plate was calculated by using the elastic-plastic inherent strain finite element method. In this paper, the elastoplastic inherent strain finite element method was used to simulate the deformation of convex plate and saddle plate with multiple heating lines, the errors between the calculation results and the experimental values of the plate deflection met the engineering calculation requirements. Moreover, the elastic-plastic inherent strain method can analyze the steel plate deformation under different heating sequence, as a result of an obvious influence on the deformation of steel plate.