The invention relates to a fume and exhaust gas purifying device, comprising a purifier main body and a fume entrance, wherein the fume entrance is located at upper of the main body, a plurality groups of high-pressure water nozzles are fixed in the main body in sequence from up to down, injection direction of part of water nozzles is downward, exterior of the water nozzles is connected with a water treatment system by pipeline, the main body is composed of multi-section tubes, a diameter narrowing concave part lies between two adjacent tubes, bottom of the main body is connected with a fume discharging tube by an elbow, and a return pipe is fixed at a lowest part, the return pipe externally connected with the water treatment system, and the fume exhaust gas purifying device has advantagesof simple structure, good purifying effect and low operation cost.