according to the standard of cooking fume emission of catering industry in Jinan, the standard of cooking fume emission of catering industry in Jinan should comply with relevant national and local laws and standards. In general areas, the emission concentration of oil fume should be lower than 2mg/m3, and the maximum allowable emission rate should be lower than 1.2 kg/h.. In certain areas, such as residential areas, hospitals, schools and other environmentally sensitive areas, the emission concentration of oil fume should be lower than 1mg/m3, and the maximum allowable emission rate should be lower than 1.1 kg/h..