The utility model relates to a temper rolling liquor air purging device for purging the temper rolling liquor on the steel plate surface when the four-roller temper mill temper-rolling the belt material, comprising six collecting tubes and six air nozzles, wherein, the air nozzles are arranged on the heads of the collecting tubes respectively; the collecting tube I is fixed under a lower guide plate via a tube gripper; the collecting tube II is fixed in the opening of the lower guide plate via a tube gripper; the collecting tube III is fixed on the scraper of an upper guide plate; the collecting tube IV is fixed in the cavity of the upper guide plate; the collecting tube V comprises two groups of a left collecting tube and a right collecting tube, which are arranged on the left sliding block and the right sliding block of a centering device respectively; the compressed air purges the upper and the lower working rollers and the steel plates via the collecting tubes and the air nozzles. The utility model has the advantages of novel structure, simple manufacture, low cost, and economy and applicability, and is a novel temper rolling liquor air purging device integrated with economy and practicability.