At first,housing pressure index is created as the index of pressure of home buyer,and rational scope of housing pressure is defined by housing price-income ratio,and then housing pressures of 35 cities in China and foreign metropolises are compared horizontally and vertically. At last,some conclusions are get that since 1998 in many cities housing pressures are rapidly increasing,and in 2007 housing pressures of 35 cities are generally too heavy,and housing pressures of most cities are larger than that of foreign metropolises,which show that in China urban housing pressures are on the whole abnormally large,so the government should try it’s best to reduce housing pressure of residents.