After having experienced the rise of land，housing sale and its price by turns，the realty industry started to fall into valley from the fourth quarter of 2008 to the first quarter of 2009；But，from the second quarter of 2009，the price of land and housing started to rise，until the end of second quarter，the sales growth slowed down. The primary causes which formed China’s high house price are that the supplies were relatively smaller than the demands，this was concerned in the administration and planned control of housing construction land supply，in the government oligopoly in land supply market，in the local government’s real estate finance which the land incomes for several dozens years were made one-off settlement of revenue and expenditure，as well as the housing was not levied the property tax. The concrete reasons of house price rise mainly have：The housing land supplies were insufficient，the oligopoly made “bidding，auction，shingle hanging” lands and the developers’ land regrate caused to rise in prices，the local government’s real estate finance impelled to rise in the house price，as well as the demands of low holding cost of real estate caused to rise in the house price，and so on.