| From the very beginning, the paper will analyze the legal relationships in the process of development and after-sales, identifying the rights and obligations among the government, developer and the house buyer. On the basis of legal relationship analyzing, the paper would find out the recent developments and defects of our country's affordable housing system. The recent developments include: defining the guarantee nature of the affordable housing, endowing the low-income group the right of being protected by the affordable housing system, making sue the land for affordable housing construction should take the priority, letting the government have the right to sale the affordable housing, defining and regulating the ownership of affordable housing and supervising the government power. The defects of the system include: lacking legislative system and specialized authorities, the monotonous operation way, imperfect supervising system and unconsummated related systems. After that, the paper will propose the suggestion to perfect the affordable housing system on the basis of referring the foreign successful experience and considering the reality of China. The measures are perfecting the legal system and developing programme of affordable housing system, setting up the affordable housing authorities and regulating its operation, developing the rental affordable housing, consummate the access and withdrawal system and supervision system, as well as perfect affordable housing related system. |