The utility model provides an exhaust device with prevent wind husky function, include the shutter, separating layer, filter screen, exhaust fan and the driving motor that follow wall body exhaust hole and stand by as an outsider and inwards arrange in proper order, the shutter is the formula shutter that hangs down certainly, its blade that includes the vertical direction range of a plurality ofedges, border department is provided with the pivot on the blade, the blade can revolute a pivot and rotate the messenger the border is to exhaust hole outside removal under the blade, top -down is provided with a plurality of zigzag shaped air vents on the separating layer. The utility model provides an exhaust device with prevent wind husky function, it is indoor to prevent effectively that dustand sand from entering into through exhaust device.