Social insurance (Social Insurance) is a kind of social and economic system that provides income or compensation for the loss of the ability to work, temporary loss of jobs or the loss of health reasons. The social insurance plan organized by the government, forced a group will be a part of its income as the social insurance tax (fee) to form the social insurance fund, under certain conditions, the insured can get fixed income or loss from the compensation fund, it is a kind of redistribution system, its goal is to ensure the material and the reproduction of labor and social stability. The main items of social insurance include endowment insurance, medical insurance, unemployment insurance, industrial injury insurance and maternity insurance.