Abstract: Information is an important commodity in the informational society. How to determine the value of all kinds of real estate policy information in the real estate market is a research subject with practical significance. According to the determination of the impact of macro financial policies, land policy and housing reform policy on the price of commercial residential buildings through the synthetical model based on the study of all kinds of information value measurement, the land policy has the most significant influence, while the macro financial policy has relative high value coefficient, and the information value of the housing reform policy has a lag of a week.

Key words: information value, real estate policy , determination of information value