China's Social Security Fund Investment Behavior Research

National Social Security Fund (NSSF) aims to be a solution to the problem of aging and serves as a strategic reserve fund accumulated by the central government to support future social security expenditures and other social security needs. As we know, it is very important for Chinese. From another point of China's capital market, because of the huge part of capital of NSSF and nature of the capital, Ness's investment behavior abstracts so much attention of all the investors.So the purpose of this article is trying to solve two problems:which industry are the NSSF most attention? Does herd behavior of NSSF exist statistically significantly? To solve these two problems, this article based on behavior finance and pay attention to study NSSF'S investment behavior. On the one hand, we take index of stocks ratio to prepare to other industry and the whole market trend. on another hand, take sales ratio to prepare to other institutional investors. In this part, we take positive analysis, use much data,chart and empirical analysis. Because of the important practical significance of NSSF's management and investment, according the current situation of china's capital market and the character of NSSF the article takes some suggestions about the supervision at last.