Sound damping pad is mounted: 1.) Clean the base surface, must ensure that the base surface smooth, no sharp objects, no protrusions. If the ground is poor flatness, noise pad before laying with cement mortar. 2) the laying of noise insulation. Phase where can take a lap or butt way to connect, lap width of not less than 50mm, flush, you must use a special glue seam cement. Seams sealed with tape covering paste to prevent cement from entering the joints caused by the sound of the bridge. (After pad covered with insulation, holes and a layer of sound damping felt better) 3.) wall around the edge of the soundproofing mat folded up, leave the height of 2 to 3 times the floating building layer thickness and adhered to the adhesive point the wall. Fold section seams should be taped tightly to prevent the generation of rigid connection 4.) laying thickness not less than 40mm of C20 fine aggregate concrete, cement mortar shall not be used on behalf of, percussion room buildings and building components mainly object collide to produce vibration, shock wave propagation along the building structure to the ambient air in the air noise generated radiation. General building, the floor is the main impact noise produced building components, such as switches collision windows, objects falling on the ground, while chairs dragging on the floor and people walking heel percussion, will have impact noise. Not only will its impact noise floor room beneath the radiation, but also its propagation building elements such as walls and columns connections and so on. Due to the impact of noise propagation in structures attenuation is small, so that the sound can spread very far, especially residential, there are many metal pipes connected up and down, but extends the propagation distance of noise, causing severe noise pollution . Sound damping pad using innovative materials and production processes, to solve the traditional floor insulation materials such as soft wood, sugar cane plate, glass wool board, rock wool boards exist to absorb moisture, rot, vermin and shortcomings of higher cost for Modern building floor soundproofing system provides the best solution.