Currently, financial sharing informatization has been widely used in large enterprise groups. Focused on the case of W Group Company, the necessity and feasibility of building a financial shared service center were analyzed, and the success factors and existing problems of its implementation path were further explored. The results show that financial sharing informatization can effectively promote the improvement of financial management efficiency, the reduction of operating costs, and the enhancement of risk control. Appropriate basic references and theoretical guidance are proposed to provide certain assistance for the construction of financial shared service centers in enterprise groups.