有限责任公司股东优先购买权是公司法基于保障公司的“人合”属性的目的而对股东出资转让的一种限制。随着市场经济的不断发展,这种限制阻碍了股权的合理移转,不利于社会总收益的提高。本文从法经济学的交易成本和效益最大化角度对该制度进行分析,以期在今后的立法工作中加以完善。 The preemptive right of stockholders of a limited liability company is a limitation on the transfer of capital contribution by shareholders to the company law for the purpose of safeguarding the company’s “fit” attribute. With the continuous development of market economy, such restrictions have hindered the rational transfer of equity and hindered the improvement of total social returns. This article analyzes the system from the angle of transaction cost and benefit maximization of law and economics with a view to improving it in the future legislative work.