Abstract: Characterized by public product,the security in rural areas is significant for the whole society and the nation.The contractual insurance of joint defense for public security not only adds new content to rural social provision,but also provides a new way for social security.Combining personnel,reward,responsibility,and compensation together,it is a new measure of public security which is suitable for market economy,and is also the heritage and development of the comprehensive management of public security in the new era.

Key words: contractual insurance of joint defense for public security, strategy of police affairs in rural areas, neoinstitutional economics