To provide an accurate understanding system of a business state on a monthly base capable of displaying information disclosure after discarding work in a shape required for understanding the state, and capable of also knowing reliability of an account settlement numeric value by receiving the information disclosure of a necessary minimum by a short cycle (a monthly report being the shortest management cycle) without compelling an excessive burden to an investor.

This monitoring system of an undisclosed enterprise displays a transition of profit and loss and a cash flow and a transition of a difference between the profit and loss and the cash flow from a trial balance sheet with every prescribed time, and graphically displays a PL/CF difference accumulating total transition table from the trial balance sheet, and displays 'a graph with the axis of abscissa as profit and loss, and the axis of ordinate as a difference accumulating total amount of the profit and loss and the cash flow', 'a graph with the axis of abscissa as the sales, and the axis of ordinate as a difference accumulation total amount of the sales and a sale income', 'a graph with the axis of abscissa as a sale cost, and the axis of ordinate as a difference accumulating total amount of the sale cost and purchase expenditure', and 'a graph with the axis of abscissa as the other profit and loss, and the axis of ordinate as a difference accumulating total amount of the other profit and loss and the other income and outgo' from the trial balance sheet.