Index funds are more suitable for fixed investment. Sharp ratio is an index that can comprehensively consider income and risk. The smaller the Sharp ratio, the lower the risk-return of fund unit risk. Jenson index is a method to evaluate the performance of the same fund according to the expected return determined by CAPM model, which was put forward by American economist Jenson in 1968. The Jenson index is relatively high, which shows that the evaluated fund is superior to the market. Therefore, considering Sharp ratio and Jenson index together, index funds are more suitable for fixed investment. For reference.