Mainly refers to each investor financially and psychologically willing to bear the volatility even investment losses. Risk is usually borne by the higher chance to get a higher return also greater. In addition to the level of personal commitment by the force of personality, personal view effects, or different ages are at different stages of life, their degree of risk tolerance are also different. Home when they were young or who worry not too heavy, high strength general risk, while the retirement age or family to rely on large fixed income, risk-taking power will be lower.