The influences on realistic decision-making behaviors of reference points and risk attitudes are rare-ly considered in current studies． To solve the above problems，the value and the risk platforms for deriving subjective decision information are introduced in terms of prospect theory and T-JM matrix，after that a deci-sion-making structure for two-level double platform coordination and its running mechanism are proposed and analyzed according to distribution characteristics of two levels＇ knowledge on double platforms，and finally，a two-level group decision-making theoretic model，application model and method steps for deriving both levels’ decision information effectively and ranking alternatives scientifically and satisfactorily are established in view of optimizing two-level satisfactory Coordination degree． A simulation example shows the presented approach is scientific，reasonable，and applicable．