As an important measure to cooperate with the commercial housing system to improve the ‘purchase’ part of the “rent and purchase simultaneously”，the co ownership housing has made considerable development in recent years （especially in 2019）. The first part of this paper introduces the development history of China’s common property rights housing；the second part，on the basis of discussing the current situation and summarizing the types of common property rights housing，points to a major dispute at present：should the common property rights housing be closed operation？In the third part，based on the inherent contradiction of long-term affordability asset accumulation，the author proposes that China should set up two types of common property right housing，closed operation and non closed operation，aiming at the target group.