With the fast development of county economy,"City administrating county"system which is formed in the reform and opening-up policy gradually appears disadvantages,it cannot adapt to the development of society and economy.In recent years,many provinces take a great upsurge in "Province administrating county",and has many pratical achievements.The "Province administrating county"not ony has firm theoretical foundations,but also gets sufficient reality conditions,and still emerges derivational problems in the process of actual mechanical.Therefore,"Province administrating county" reformation should take possible cases into consideration,and take relevant reform measures.