Based on a Pade approximation, a wide-angle parabolic equation method is introduced for computing the multi- object radar cross section (RCS) for the first time. The method is a paraxial version of the scalar wave equation, which solves the field by marching them along the paraxial direction. Numerical results show that a single wide-angle parabolic equation run can compute multi-obj ect RCS efficiently for angles up to 45 ° . The method provides a new and efficient numerical method for computation electromagnetics.