摘要：信息不对称在证券市场上是一种常见的情形，它不仅仅存在于中国，基本上只要有证券市场存在，这种现象就难以避免。在中国，证券市场上信息分布不均衡的情况尤为严重，从而造成了市场机制效率的低下。对证券市场的信息不对称问题进行研究，不仅有利于证券市场的健康发展，有利于保护各个投资者的切身利益。本文首先介绍了信息不对称的理论，在理论基础上讨论不对称的表现和影响，继而分析成因，便于采取相应的措施。

关键词：证券市场；信息不对称；信息披露

Abstract: Information asymmetry is a common situation in the securities market, it not only exists in China, almost as long as the existence of securities market, this phenomenon is inevitable. In China, the securities market information distribution imbalance situation is particularly serious, resulting in the low efficiency of market mechanism. Study of the securities market information asymmetry problem, is not only beneficial to the healthy development of securities market, is conducive to protect the vital interests of the individual investors. This paper first introduces the information asymmetry theory, based on the theory of asymmetry and impact, which in turn causes analysis, easy to take corresponding measures.

Keywords: stock market; asymmetric information; information disclosure