The utility model discloses an anti -pollution drying device, include: the oven sets up in the position that is close to the wall body, collect the cover, set up in it is just right on the wall body of oven top the oven, collect the extension that the cover was provided with downwardly extending all around, the collection is covered and still is provided with an opening, the opening is provided with the air pipe who is connected with outside atmosphere or exhaust -gas treatment equipment, be provided with the fan in the opening, when the fan starts the back, reach in collecting the cover near extension lower extreme forms the negative pressure. From above -mentioned can find out, the utility model provides a pair of anti -pollution drying device collects the cover through setting up above the oven, collect the oven and discharge indoorly at the waste gas that the stoving in -process produced to prevent the exhaust pollution indoor environment, built good operational environment.