Since the housing syetem reform before 10 years，Beijing have remarkable achievements on housing construction.Yet，the public housing policy in Beijing is imperfect，and the supply of policy housing is too few.Therefore，Beijing’s housing prices rose much faster than incomes rising rate of ordinary resident.and the burden of residential housing is very heavy.the basic way to resolve the excessive burden of ordinary residents and housing equity is to increase the supply of policy houses，and make 60% of the residents to have chance enjoing the housing policy.