The Research On Vicissitude Of The Assets Impairment Accounting Policy Of Listed Companies In China

The reform of economic system and changes of external environment of corporate make the phenomenon of assets impairment appear frequently. Originally, assets impairment is aim to accurately reflect the real value of corporate assets and provide users with useful information related to decision-making. To further improve assets impairment accounting has became a trend of the times. From the advent of provision for doubtful debts in 1992 to the promulgation of <Accounting Standard for Corporate-Impairment of Assets>in 2006, it can be said that the accounting standard for assets impairment are moving toward perfection gradually, and achieving convergence and equivalent with the international standard.The impaired assets was not allowed reverse once it was confirmed which has a influence on asset impairment of corporate. Essentially, asset impairment is from conservatism, the change of asset impairment can be demonstrated according to measuring of conservatism.Based on the above ideas, the dissertation draws up from the theory of asset impairment, discuss the concepts, basic theories, identification, measurement and information disclosure, and then analyses the germination and development of asset impairment both west and Chinese accounting standard. In positive study part, the dissertation taking the Shanghai and Shenzhen A-share companies'data from 2005 to 2009 to study asset impairment confirmation which contain overall sample in descriptive statistics method and sample of different industry and different property scale in Non-parametric and One-Way ANOVA test, then taking data from 1994 to 2009 to verify the changes in accounting conservatism in regression analysis with Basu model and the relationship between asset impairment and accounting conservatism. The result of this dissertation states:the implement of new accounting standards has had a great influence to corporate of different industry; corporate with different property scale have a remarkable difference in the definition of assets; there still exist accounting conservatism after every new accounting standards implement, but it is not conspicuous before 1997. The conservatism data has increased in1998 to 2006 and then declined in 2007 to 2009. Last but not least, vicissitude of asset impairment policy do affects accounting conservatism deeply.