Abstract: It is necessary for agricultural development to mitigate huge agricultural flood disaster risk in the plain of the middle reaches of the Yangtze River. By studying on agricultural land system and risk characteristics of the Chinese farmers' management in this article, it was concluded that there were defects of micromanagement and no actuating mechanism of property in China's agricultural system. Farmers had no way and no ability to mitigate huge flood disasters, and they actually were to be evaded managers under exocircumstances of agricultural risk share. Government must be leader to mitigate and share agricultural flood disaster risk. On this ground, this article has put forward policies of agricultural flood disaster risk management: (1) to strengthen agricultural ecological environment construction, and to preserve land and water in superior and middle reaches of the Yangtze River, and to recovery ecological marsh system; (2) to develop agriculture mitigated flood disaster, and to achieve excelling of regional agricultural structure; (3) to apply active financial policies to increase agricultural investment; (4) to amplify farms' capability to mitigate natural disasters by agricultural policy's insurance shared risk of agricultural flood disasters in the plain of the middle reaches of the Yangtze River.

Key words: the plain of middle reaches of the Yangtze River, agricultural flood disaster