The traditional rural financial supervision in China aims to overcome negative externalities，in recent years，the importance of incentive measures is gradually known，the real practice in exploring the incentive of positive externality of rural finance is started，as a result，the idea for rural financial supervision begins to change from the overcome of negative externality to the incentive of positive externality. Currently，in real practice in positive externality incentive in rural financial supervision，the incentive is not enough as a whole，but “over incentive” of externality exists in some measures，furthermore，macro coordination is not enough on many supervision objectives. The change of China’s rural finance supervision from overcoming negative externality to incentivizing positive externality can be realized by perfecting market access mechanism with the orientation of “lowering threshold and loosening the access”，by consolidating market-oriented operation incentive by taking innovating products supervision adjustment as the core，by establishing market withdrawal incentive by setting up ordered legal withdrawal path as the goal，and by restricting governmental relief incentive by strictly limiting governmental support requirements.