A cooking system, comprising: a body; a heating apparatus provided at an upper surface of the body and configured to cook food by applying heat; and a ventilation apparatus configured to take in polluted air generated during cooking, wherein the ventilation apparatus comprises: a housing mountable on an upper surface of the body; a suction port case disposed inside the housing and having a suction port configured to take in the polluted air from the front of the heating apparatus to the rear; a suction fan provided inside the body and configured to generate a suction force for the polluted air to be taken in through the suction port; a passage (130, 410) through which the air taken in through the suction port passes; a pair of discharging port cases disposed on opposite side of the suction port case inside the housing; a discharging port formed inside the discharging port case and configured to discharge purified air; at least one filter (610, 620) mounted inside the passage and configured to purify the air passing through the passage; and an exit port communicating with one end portion of the passage and configured to discharge the air purified by the at least one filter indoors; characterised in that: the ventilation apparatus further comprises a swirl generating unit configured to generate a swirl at an upper portion of the heating apparatus, the swirl generating unit comprising a discharging hole mounted at a front surface of the discharging port case and formed in a slanted manner toward an outside of the side surface thereof toward an outside the housing such that air discharged through the discharging port is directed toward an outside of the edge of the upper surface of the body. a body; a heating apparatus provided at an upper surface of the body and configured to cook food by applying heat; and a ventilation apparatus configured to take in polluted air generated during cooking, wherein the ventilation apparatus comprises: a housing mountable on an upper surface of the body; a suction port case disposed inside the housing and having a suction port configured to take in the polluted air from the front of the heating apparatus to the rear; a suction fan provided inside the body and configured to generate a suction force for the polluted air to be taken in through the suction port; a passage (130, 410) through which the air taken in through the suction port passes; a pair of discharging port cases disposed on opposite side of the suction port case inside the housing; a discharging port formed inside the discharging port case and configured to discharge purified air; at least one filter (610, 620) mounted inside the passage and configured to purify the air passing through the passage; and an exit port communicating with one end portion of the passage and configured to discharge the air purified by the at least one filter indoors; a housing mountable on an upper surface of the body; a suction port case disposed inside the housing and having a suction port configured to take in the polluted air from the front of the heating apparatus to the rear; a suction fan provided inside the body and configured to generate a suction force for the polluted air to be taken in through the suction port; a passage (130, 410) through which the air taken in through the suction port passes; a pair of discharging port cases disposed on opposite side of the suction port case inside the housing; a discharging port formed inside the discharging port case and configured to discharge purified air; at least one filter (610, 620) mounted inside the passage and configured to purify the air passing through the passage; and an exit port communicating with one end portion of the passage and configured to discharge the air purified by the at least one filter indoors; characterised in that: the ventilation apparatus further comprises a swirl generating unit configured to generate a swirl at an upper portion of the heating apparatus, the swirl generating unit comprising a discharging hole mounted at a front surface of the discharging port case and formed in a slanted manner toward an outside of the side surface thereof toward an outside the housing such that air discharged through the discharging port is directed toward an outside of the edge of the upper surface of the body.