The present invention provides a technique of assisting in forming plans of measures for management reforms, which are specific to an individual enterprise, and a technique of verifying formed plans of measures. In the present invention, a general business-operation-index vector f that includes a plurality of indexes indicating the condition of business management; a general plan-of-measures vector x including a plurality of plans of measures which are information about how to deal with the condition indicated by each index included in the general business-operation-index vector f; and a problem-index vector f', are used. On the basis of these, a problem-index-plan-of-measures matrix Mm' is produced which defines correlation between the problem-index vector f' and a plan-of-measures vector x' (Step 3221). A potential plan-of-measures vector x' is selected from the general plan-of-measures vector X by extracting the plans of measures in the column of the matrix Mm' (Step 3222). A gross-investment (necessary to execute plans of measures) matrix Mi is produced (Step 3223). A relational expression between the problem indexes and the plane-of-measures (f'=Mm'x') are produced Step 3224).