Abstract: Proposes a method based on dominance probability for SMADM with random variables. The dominance probability of pairwise comparison of alternatives is defined and calculated to frame a dominance probability matrix, where both attributes of the alternatives are taken into account. Then, the PROMETHEE II method is used to result in ranking the alternatives. The proposed method is clear in concept and easy to calculate, thus solving well the problem of possible data loss due to the method based on stochastic dominance criterion. A numerical example is taken to illustrate the feasibility and validity of the proposed method.