Rural areas' social security system is the outcome of mature industrialization and of what industrialization reciprocates agriculture. Our country's original rural area social security system can no longer meet with the current social development requirements as it was based on collectively-owned economy and provided assurance first to families and next to collective units. Establishing an appropriate rural area social security system is an important means to resolve "three nong" (agriculture, countryside and peasants) problem and also an important measure to build new socialist countryside. While in the process of building social security system in the countryside, governmental responsibility should be made clear, practical and feasible financing mechanism and highly-efficient funding mechanism built up, with focus given to the establishment of the new model of rural area old-age insurance.