能力集扩张(competence set expansion)是在决策过程中，决策者将已获得的能力集(competence set)拓展到解决问题所需能力集的过程。分析了能力集以及能力集扩张的概念，从确定型与不确定性、多目标决策、动态能力集等方面提出了能力集扩张的研究方法。

Competence set expansion is a process that decision-maker expands the obtained competence set to the competence set which is need to solve questions in decision process. This paper analyses the concept of competence set and its expansion and provides competence set expansion’s research methods under uncertainty, certainty, multiple criteria and dynamic state.