[Objective] Construction dust is one of the sources of urban air pollution

which discharges at low height and always concentrates in dense population area. [Methods] High polymer materials of SH dust-depressor was chosen as media

and factors of construction dust source(also construction soils)

application amount

slope gradient

slope shape

solidified time and density were considered. The controlling effect and applicability were evaluated by PM10 and PM2.5. [Results] SH dust-depressor plays a role of connection between soil particles and then restrains effectively soil shrinkage crack. The soil surface maintains integrity after solidified with SH dust-depressor. SH dust-depressor has good dust controlling effect on construction dust source(such as silt

fly ash

clay and gravel soil). There had not been any outputs of PM10 and PM2.5 during nine-level wind erosion. SH dust-depressor has good applicability to soils in construction site. The permeation and solidification of SH was never affected by soil slope

density and surface roughness. In view of dust control and economic application

the appropriate sprayed amount should be set at 1.2 kg/m2 and the solidification duration should be 3 d. [Conclusion] SH solidified measure can form protective film against wind erosion and then control dust from the source.