Most of the investment because of limited funds, and in the face of the type and number range of mutual funds, how to choose a good fund performance is investor goal. In this study, in March 2004 to September 2009 between the stock market during the study period, due to the occurrence of subprime mortgages, so in March 2004 to September 2008 to do it again, and by using 75 open-ended equity mutual fund for the study sample, the use of Carhart (1997) four-factor model to measure fund performance, fund characteristics of the relationship between factors on the performance. The results showed that the number of months and the investment trust fund set up fees for the storage rate and the fund performance was a significant negative correlation, while the other fund size, fund beneficiaries, fund expense ratio and fund managers buy and sell all turnover rate was positively correlated with fund performance.