With the rapid development of capital market in China, more and more companies have realized the great advantages of listed companies in raising and using funds. However, there are relatively few studies on the rationality of IPO pricing under marketized full circulation. With regard to 1PO issue prices, this paper makes a principal component regression analysis of variables of corporate value to study their interpretative power of prices, so as to test the rationality of marketized share issue pricing. The study indicates that IPO issue prices since the introduction of the inquiry system in C...