The purpose of this study is to analyze whether the years of service of public high school teachers as the life cycle of career influence their purchase intention of financial instruments. According to empirical results of descriptive statistics and multi-logistics regression, we give three specific conclusions. First, no matter the risk on the mutual fund is, the purchase intention of public high school teachers is significantly affected by the years of service. Moreover, the residential district is another important factor to public high school teachers to purchase the high risk mutual funds. Furthermore, the purchase intention of public high school teachers is determined by the steady payout dividend and return on the mutual funds.