Abstract: The appearance of complex large group brings new problems on the developing of group decision support system.Aiming at the complexity of developing of complex large group decision support system，this paper puts forward a kind of structure of group decision support system oriented complex large group.The system structure is guided by the decision problem solving.Firstly，design the decision problem solving process and method.Then，the system processing process is proposed.On the base of it，the layer and function structure of system is constructed.And its realization technology is studied in order to assist the developing of GDSS oriented complex large group.

摘要： 复杂大群体的出现给群决策支持系统的开发带来了新的问题，针对复杂大群体决策支持系统开发的复杂性，提出了一种面向复杂大群体的群决策支持系统结构，系统结构以决策问题求解为导向。首先设计了复杂决策问题求解流程和方法，然后提出了系统处理流程，在此基础上构建了系统的层次结构和功能结构，并对其中的实现技术进行了深入的研究，以期辅助面向复杂大群体的群决策支持系统的开发。