Abstract Securities investment risk is modern economic development in a very important question, in the stock market, we have all kinds of risks, including foreign exchange risk of interest rate risk, credit risk, liquidity risk, stock market, price risk, etc. This thesis mainly discussed the various is securities investment risk theory knowledge and how to maximize the damage to our risk reduction. The first chapter, securities investment risk is briefly analyzed the research background, status quo and the domestic and foreign research that the purpose of the research significance In the second chapter, securities investment in brief introduction of securities investment, securities investment risk and risk kinds basic theory, specify the classification of securities risk with specific causes, let the reader to risk this professional term has a specific understanding, after can correctly identify risk investment. Chapter 3, from sources of risk analysis with our country securities market situation, summarizes some preventive measures, with a view of China’s securities market is healthy development. The fourth chapter at present, this paper study on securities investment risk summed up some of the limitations of its existence, and puts forward some Suggestions and future research prospect. 【 key words 】 : Securities investment;investment analysis;Risk prevention