Abstract: This paper summarizes the relational study of negotiation theory and simulates the multi-issue negotiation with Kuipers qualitative simulation method.The process of qualitative simulation accorded with the logic of real negotiation and the intuitionistic conjecture of people,which could reflect the change direction clearly.The qualitative simulation negotiation mode has good adapt ability to real negotiation and settles the problems that are engendered in traditional quantitive simulation by uncertain problems.It could also offer support for decision-making to each part of negotiation.

Key words: multi-issue negotiation, qualitative simulation, negotiation support systems, qualitative reasoning