本文运用事件研究法,分析2015年被出具非标准审计意见上市公司的市场反应。研究发现,市场对非标准审计意见产生负向反应,不同类型的审计意见市场反应有所不同;被出具非标准审计意见的ST公司和非ST公司的股票分别在第6交易日和披露日后有负向的市场反应;首次和非首次被出具非标准审计意见公司的股票分别具有正向和负向的市场反应。 This article uses event research method to analyze the market response of listed companies that issued non-standard auditing opinions in 2015. The study found that the market reacted negatively to the non-standard audit opinions, and the market responses of different types of audit opinions were different. The shares of ST companies and non-ST companies that issued non-standard audit opinions were respectively on the 6th trading day and the disclosure date Negative market reaction; the first and non-standard audit opinion issued for the first time the company’s shares have positive and negative market reaction.