City life quality rise and rapid development of economy, the restaurant industry is prosperous. Many restaurants into community, lampblack to exhaust gas pollution growing. Catering industry with industrial waste gas, motor vehicle exhaust soot emissions, is regarded as the three "killer" pollution of the atmosphere. For many years in the south China sea neighborhood have formed a large number of hotels and restaurants, some of them not to carry out the soot treatment measures, it is a part of the diet service enterprise not installing lampblack purification device as required; 2 it is part of the diet service enterprise has been installing lampblack purification device but not normal operation, some unauthorized repair, service facilities, some regular cleaning maintenance is not required, some alternative purification device to exhaust ventilation facilities. In the end ? lampblack pollution seriously affect the community residents.