The issue date of a fund refers to the act of selling fund certificates or beneficiary certificates to investors, which is a basic link in the operation of investment funds. The contents of fund issuance include determining the issue target, issue date, sales form, issue price, issue amount and issue place. According to the different objects and scope of issuance, fund issuance can be divided into two forms: public offering and private offering. Public offering refers to the way of issuing funds to the public in public; Private placement is a way to issue funds to a few specific investors. Because the target is specific, the distribution cost is low. According to the channels of fund sales, the issuance methods of funds can be divided into the following three types: direct sales: direct sales of funds to investors without any special sales organization, that is, private placement. Underwriting: a method of issuing funds through underwriters. Underwriters are generally investment banks, securities companies or trust and investment companies. The underwriter first buys the fund certificate according to the net asset value, plus a certain sales fee, and sells the fund certificate to investors at the open sales price. Group underwriting: When the fund scale is relatively large and the issuance task is relatively heavy, it may be difficult for an underwriter to sell the fund alone. At this time, a sales team will be organized, consisting of several underwriters, and each underwriter will undertake a part of the fund sales task.