We firstly introduce development background of new collective forest tenure reform. The situations indicate that the collective forest tenure reform has already stepped into comprehensive and in-depth stage. However, due to neglect of local demands and actual conditions, there appear problems of low operating efficiency of supporting measures and relevant policies and little effect of in-depth reform. Therefore, it is required to strictly distinguish the relation between system change of collective forest tenure and the in-depth reform. For the purpose of in-depth reform, in accordance with local situations of forest farmers and forestry organizations, requirements for system, as well as local reform conditions, we strictly divide system change of collective forest tenure into three types: induced institutional change, hidden induced institutional change and imposed institutional change. Then, we divide the imposed institutional change into weak institutional change and pure strong institutional change.