中文摘要：

本文研究新法律实施、IFRS的强制采用分别对应计与真实盈余管理的影响。利用我国独有的2003至2008年的制度环境，本研究发现：首先，在新法律实施以后，公司的应计盈余管理行为尽管得到了一定的抑制，但这是公司选择激进会计政策的结果。同时，新法律实施以后，公司的真实盈余管理在费用方面显著增加，在现金流方面和产品成本方面显著下降，综合真实盈余管理显著下降，真实盈余管理整体在调节利润方面则没有明显的一致方向。这与Cohen（2008a）的发现不一致，表明我国新法律的实施可能没有对公司的盈余管理行为产生象SOX法案那样明显的治理效果。其次，与IFRS趋同的新会计准则在我国实施以后，公司的应计盈余管理增加了，而公司整体真实盈余管理水平则没有变化，真实盈余管理带来了利润的下降。

英文摘要：

This paper investigates the effect of the new laws and the International Financial Reporting Standards （IFRS） on accrual and real earnings management. Under the unique institutional environment in China between 2003 and 2008, we obtain the following results： First, after the new laws are implemented, activities to manage accrual earnings are inhibited to some extent because finns choose aggressive accounting policies. Second, after the implementation, the expenses of real earnings management increase significantly, while cash flow and product costs decline. Comprehensive real earnings management also declines dramatically, while lacking an obviously consistent direction in adjusting earnings. This is not consistent with Cohen et al. （2008a）, suggesting that implementation of the new laws in China has not had the same effects on earnings management as SOX in the US. Finally, after implementation of the new accounting standards in convergence with IFRS, accrual earnings management increases, with no change in comprehensive real earnings management. Real earnings management also reduces earnings.