The invention discloses an oil fume treatment system of cooking equipment. The system involves a shell, wherein an inner cavity of the shell comprises an isolated oil fume treatment area and a closedcooking area; the cooking equipment is arranged in the cooking area; a primary purification device is arranged in the oil fume treatment area; the air inlet end of the primary purification device communicates with the cooking equipment, and the air outlet end communicates with the cooking area; and the position, located at the side part or the top of the cooking area, of the shell is provided withan exhaust port, and a secondary purification device is arranged at the exhaust port. Oil fume in the cooking equipment enters the cooking area after being treated by the primary purification device,and the oil fume entering the cooking area after being treated by the primary purification device and oil fume escaping from the cooking equipment into the cooking area are subjected to secondary purification treatment through the secondary purification device. The system can avoid the pollution caused by the oil fume generated in the cooking process to the surrounding environment, and can greatly improve the efficiency of oil fume purification treatment and improve the cooking environment.