我国上市公司股权结构是“一股独大”式的股权高度集中。非流通股、国家股成为我国上市公司股权结构的主要成分。大段东利用其控段地位有恃无恐地从事掠夺和侵害中小股东权益的活动,为了增强投资者的信心和成功地发展证券市场,“内部人”掠夺的风险必须得到有效的控制。股权集中条件下的股权制衡,是抑制大股东掠夺、保护中小股东权益的重要方式,也是短期内改善公司治理结构切实可行的方法,使各大股东有能力,也有动力从内部根本上抑制大股东的掠夺,形成互相监督态势,是改善上市公司治理结构的行之有效的方法 Ownership structure of listed companies in China is “a single dominant” type of equity is highly concentrated. Non-tradable shares and state shares have become the main components of the ownership structure of listed companies in China. In order to enhance the confidence of investors and successfully develop the securities market, the risk of “insider” plundering must be effectively controlled by the large section of East China using its position of control section as a means of plundering and infringing the rights and interests of minority shareholders. Equity balance under the conditions of equity checks and balances, is an important way to curb the predation by major shareholders, protecting the rights and interests of small and medium shareholders, but also a practical way to improve the corporate governance structure in the short term, so that major shareholders have the ability and motivation to fundamentally inhibit the major shareholders Of the predatory, the formation of mutual supervision of the situation, is to improve the governance structure of listed companies and effective method