In order to research the thermal conductivity of the air-entraining concrete,influencing factors such as aggregate content,sand ratio,fly ash content and air content on thermal conductivity of air-entraining concrete are quantitatively investigated by DRH-that is,a conductivity Apparatus of Guarded-Hot-Plate.The experimental results show that water-cement ratio and air content are the main factors of thermal conductivity of the air-entraining concrete.In addition,aggregate content,sand ratio,and fly ash content also does have an effect on the thermal conductivity to an extent.