| Under the background of modern scientific and technological development, invisible asset appears to be more active than visible assets. Generally, the amount of invisible assets can reflect its owner's abilities of science and technology as well as the ability of intellectual and culture. Invisible assets are an important part of enterprise capital and also a necessary economical element during the running of enterprise and are playing an increasingly dominant role in wealth creation. So, how the intangible assets of listed companies affect the business performance? The degree of influence? These are what need this paper to answer.First in the paper, there is a systematical review of the theoretical and empirical literatures on the value of enterprise of intangibles. On the basis of summing up the results of researches on the value of intangible assets inside and outside China, we made a research on intangible assets and operating performance of China's listed companies, and then constructed a inherent theoretical analysis system on the relationship of intangible assets and operating performance. Based on the theoretical research, this article selects all medical bio-products industry listed companies as a sample, which issued in the 2006-2008 Shanghai and Shenzhen A-shares, using principal component analysis and the regression analysis model and SPSS software to analyze the correlation of intangible assets and operating performance of Listed Companies in China. and put forward some constructive comments and suggestions on the management of intangible assets of listed companies in China. The last part summarize the conclusion of the above every part ,put forward myself view on the further studied direction in the future. |