Stocks prices result from stocks market risks,which include system risk and non-system risk.

At the same time,the emergence of system risk and non-system risk should be considered during the investment.

Since the factors which influence the Price of Securities are different and restrict mutually, the Security Comhinations may reduce or put out the non-system risk effectively.

on the basis of analyzing the factors affecting the risks of venture capital investments, an index system involving market risks and agency risks for evaluating the non-systematic risks of venture capital investments is established, Then, a fuzzy method for evaluating the risks is presented.

An index system for evaluating the non-systematic risks of venture capital investments is established on the basis of analysing the factors affecting the non-systematic risks of venture capital investments.

A non-systematic risk evaluation index system on high-tech project investment is established.

We show theoretically that, when managers can t trade the market portfolio, optimal incentive intensity decreases with firms nonsystematic risk but is ambiguously affected by firms systematic risk; when managers can trade the market portfolio, optimal incentive intensity decreases with firms nonsystematic risk but is unaffected by systematic risk.

Then we observed phenomenon that,currently,Chinese stock market systematic risk proportion is excessively high and the systematic risk is structurally unbalanced with the non-systematic risk.

The paper analyzes how the insurance industry influenced the occurrence of the crisis and how it was impacted by the crisis from the three aspects of risk management behavior motivation,spread of non-systematic risks and containment of systematic risks,and then clarifies the future development direction of internal risk management for the insurance industry.