This paper makes a regression analysis on whether the earning forecast quality of the GEM listed companies is influenced by CEO power, and the property rights and internal control regulates their relationship, which takes the GEM listed companies released performance forecast announcement from 2012 to 2016 as a sample. The research Indicates that there is a significant negative correlation between CEO power and the earning forecast quality. High-quality internal control will significantly restrain this negative correlation. Furthermore, even though in the sample of bigger CEO power, internal control is still effective in guaranteeing the quality of accounting information. Meanwhile, under the relationship of multi-agency, the nature of State-owned property rights will significantly enhance the negative correlation between CEO power and the earning forecast quality.