针对一类多目标两层决策问题，从上、下两层决策者之间的偏好关系出发，探讨了问题的决策机制：半合作决策机制与纯独立决策机制，说明了可以利用增广加权Ｔｃｈｅｂｙｃｈｅｆ范数问题来有效地表示它们的非劣解集，据此设计辅助这类多目标两层决策问题的交互式决策方法 Aimed at a kind of multi-objective two-level decision-making problem, the decision-making mechanism of the problem is discussed from the preference relations between the upper and lower two-level decision-makers: semi-cooperative decision-making mechanism and pure decision-making mechanism, Norm problems to effectively represent their non-inferior solutions, and to design interactive decision-making methods that will assist in this kind of multi-objective, two-level decision-making problem