Workshop air treatment device and method

The workshop air treatment device comprises an air return mechanism, the air return mechanism comprises an access support used for communication, a temperature return box is arranged in the middle of the access support, an air return pipe penetrates through the front end of the access support in a penetrating mode, and a connecting base is further vertically arranged at the position of a plate face arranged on the upper portion of the access support in a surrounding mode in a penetrating mode; an air return temperature sensor is arranged in the middle of the connecting base, a fresh air sleeve is arranged in the middle of the top end of the temperature return box, and the temperature return box and an air return pipe are arranged to be used for an assembly structure of air in a workshop, so that connection of specified airflow is achieved through the structure of a corresponding air outlet sensor; the corresponding protective net frame is used for sucking and purifying gas contained in external workshop air.