The invention relates to a fog sealing layer material, a preparation method and application. The material is prepared from, by mass, 80-120 parts of emulsified asphalt, 2-5 parts of carbon nanotube dispersion liquid, 5-10 parts of a penetrating agent, 150-250 parts of silicon carbide and 30-60 parts of ferroferric oxide. The fog sealing layer material has the repairability, when microcracks existon a fog sealing layer, a second fog sealing layer and other maintenance overlay layers are not needed, and the fog sealing layer material can be repaired through microwaving treatment; the fog sealing layer material is compounded by carbon nanotubes, the silicon carbide, the ferroferric oxide and other materials, the thermal conductivity and microwave conversion efficiency of the material can besignificantly improved, so that under the microwave effect, the efficiency of the material is higher, and it is achieved that in the same melting state, microwave energy consumption can be reduced by10-15%; the adopted material makes the fog sealing layer achieve good thermal conductivity, good microwave conversion efficiency and good pavement performance, and the carbon nanotubes can improve theperformance of an asphalt material; the silicon carbide has good abrasive resistance performance, and the abrasive resistance performance of the fog sealing layer is further improved.