The real estate company is a sepial group which has close relationship with macro economics and people' s life. Nowadays, threr are more and more expectation and criticism for them, because a few of real estate companies have some problems, such as cheating custormer with false advertisement, swigging up house price, surrounding and selling land, taking up farmland, building house only for the rich, envasion tax, etc. In order to make the real estate company perform social duty more activly, we should build a system to increase cost of escapin...