Fixed investment of rural commercial bank fund is the abbreviation of fixed investment fund, which refers to a fixed amount (such as 500 yuan) invested in a designated open-end fund at a fixed time (such as the 8th of each month), similar to the regular deposit and withdrawal method of rural commercial bank. People usually refer to funds mainly as securities investment funds. There are three main analysis methods of securities investment: basic analysis, technical analysis and evolution analysis, in which the basic analysis is mainly applied to the selection of investment objects, while the technical analysis and evolution analysis are mainly applied to the temporal and spatial judgment of specific investment operations as an important supplement to improve the effectiveness and reliability of investment analysis.