Filling brick as a hollow characteristic, aerated brick, so stretchable, while the main building is supported by a reinforced concrete structure, the bricks filled only play the role. When an earthquake occurs, reinforced concrete structure will therefore deformed, if it is solid brick, filling brick factory, reinforced concrete structural deformation is nowhere backlog stretching, burst, bombs fall. Filling brick size requirements 240mmx115mmx90mm 390mmx190mmx190mm nationwide, aerated brick technology, due to the condition factors, the state will ban all use of red brick in 2007 before, aerated brick prices, mandatory use of brick plus gas. Now the use of clay brick construction units on the market, the relevant departments to charge certain fees as new building materials clay development costs. So the market potential is large brick plus gas. Current national restrictions on the use of solid clay as a filler material in the framework of urban construction, the intensity level to prohibit the use of bricks -MU10 less than 5 floor building.