市场经济系统的健康运转离不开启动机制的理性选择。本文分别从逻辑学和系统论的角度对经济运行的两种启动机制──投资启动与消费启动进行了理论分析。发现惟有坚持消费启动为主导，并辅之以必要时投资启动，经济的健康运转方能实现，当然，这离不开相关启动条件的适时创造。 The healthy operation of market economy system can not be separated from the rational choice of starting mechanism. This paper analyzes the two starting mechanisms of economic operation from the perspective of logic and system theory respectively: investment start-up and consumption start-up. They found that only by insisting on the start-up of consumption and supplemented by the investment started when necessary, the healthy operation of the economy can only be achieved. Of course, this can not be done without the timely creation of relevant starting conditions.