The market constraints on the development of houserent enterprises are mainly due to low return on investment, heavy tax burden, and difficulties in raising funds. Through the calculation of the investment income and cost of the housing leasing enterprises, it is found that the ratio of sale to rent, interest rate and tax are the key factors that affect the development of the houserent enterprises. Around these three key factors, we can carry out different policy designs, namely, limited land price mode, limited interest rate mode and housing guarantee mode to support the development of houserent enterprises in different regions and different markets. For most cities with high housing prices and high saletorents ratio, we can choose the policy support mode of reducing land cost, implementing land pricelimited transfer, reducing taxes and fees, and providing longterm loans; for some cities with reasonable saletorents ratio, we can choose the policy support mode of providing longterm lowinterest loans and reducing taxes and fees. In addition, To cope with the housing difficulties of low and middleincome families, the policy support mode in which the full tax and fee could be reduced or eliminated, the land price limited, and longterm lowinterest loans conducted should be adopted as an important supplement to the housing security system.