The invention relates to the technical field of a design method for the opening data source of cost information, in particular to a design method for supporting the multi-cost object type opening data source of cost information. The design method for supporting the multi-cost object type opening data source of the cost information comprises the steps of extracting the statistical rules of cost objects, expense items, cost drivers and materials consumption and others joined with a peripheral system, forming a data source configuration function opened to a foreground user, and is capable of enabling the functions of a cost accounting software not to be dependent on a specific enterprise management software, and realizing the platformization of the cost accounting software.