Abstract: Basic role mining,edge role mining, δ-approx role mining and min-noise role mining are conventional role mining problems. There are different constraints and objectives in these problems, besides constructing role engineering system by using the existing role mining methods is complex and costly. A method of modeling role mining was proposed, which transformed role mining problems into Boolean matrix decomposition problems. Integer linear programming was applied to model these problems, and the mining algorithm was proposed. Results of the application example showed that,the method not only simplifies construction process,but also reduces engineering cost.