This paper is devoted to risk management and risk measurement methods. The author considers methods of risk measurement and proposes the Inte- gral Sum of Differential Weighted Indexes of Risks (or ISDWIR) method of risk measurement. The method is based on dynamic enterprise risk matri- ces. The matrix describes the changes of corporate risk values over the time. The method assists to choose risk management decision having good effects on corporate risk values. The ISDWIR method is also compared with other risk measurement methods.