At present, it is stipulated that the cooking fume discharged from restaurants should be purified by a cooking fume purifier before being discharged. There are prescribed standards for cooking fume discharge. Generally, all restaurants that need to install cooking fume purifiers have installed them, and the environmental protection cooking fume pollution management department has begun to check them. It is better to install them. When cleaning, cut off the power supply. When the oil accumulated in the oil accumulation cup exceeds two thirds, it should be removed and removed. Shells, masks, blades, etc. should also be wiped with fine soft gauze or soft brush dipped in a little soapy water or detergent. They should not be washed with caustic soda water or other organic solvents, and they should not be scraped with sharp tools to avoid damaging the surface spray and paint layer.