By using the data of listed real estate companies from 2009 to 2013 in Shanghai and Shenzhen A--share stock market, this paper constructs an optimization model of financing structure based on the in- teractive relationship between financing structure and enterprise value, and searches for the best financing structure interval targeting on the maximization of enterprise value. The estimation result of Generalized Methods of Moments shows that the interactive relationship between financing structure and enterprise value does exist. Meanwhile, the...