The utility model discloses a circulating-type oil fume purification machine which comprises a shell, an air inlet device, a cooling device, a fan device, an air outlet device and an oil fume separation and purification device, wherein the air inlet device is arranged in the shell; the cooling device comprises a heat absorption water heater provided with a flat-shaped heat absorption water tank, a heat storage water tank communicated with the flat-shaped heat absorption water tank, and a drain valve communicated with the heat storage water tank; the fan device comprises a suction exhaust fan provided with an air suction hole and a fan hole; the air outlet device comprises an air outlet channel and an air outlet; the oil fume separation and purification device comprises a mechanical grease separator integrated with the air inlet device, and a medium smoke processor integrated with the air outlet device. The circulating-type oil fume purification machine is provided with the oil fume separation and purification device, so that zero emission of kitchen oil fume gas can be realized, the social environment pollution stress is relieved, the indoor oil fume gas is thoroughly purified, and the home environment is improved.