The stock index stock abbreviation stock refers to the stock or the time refers. It is by the stock price index took the transaction sign the thing financial stock variety, is in the 1980s finances innovation tide importantly, appears the most successful finance grows one of tools, also is in the financial stock the history is shortest, develops the quickest finance to grow the product. In our country, along with the stock market scale unceasing expansion and its in the social economy life the status unceasing enhancement, refers to the stock using the stock to carry on a set of time to guarantee the value the demand to be more and more big; Moreover after our country joins the World Trade Organization, the capital market opens degree more and more high, opens the stock to refer to the stock the call to be more and more intense. This article refers to the stock on the stock the definition and the development course, our country redevelops the stock to refer to the stock urgent and the stock refers to the stock refers to stock question and so on some barrier to our country capital market significance as well as the current development stock separately launches the elaboration.