The invention relates to a fugitive dust treatment device with controllable purification scope, wherein the fugitive dust treatment device includes a base, a main body, a steering mechanism and a
water circulation mechanism; the steering mechanism includes a rotation shaft, a rotating base, an annular limit plate, a second driving
assembly and two support plates. The
water circulation mechanism includes a third driving
assembly, a collection plate, a collection groove, a first water conveying
pipe, a second water conveying
pipe, a water tank, a water suction pump and at least two nozzles; thefirst driving
assembly comprises a third motor, a first gear and a second gear; the second driving assembly comprises a first motor, a driving wheel, a driven wheel and a driving belt. In the fugitivedust treatment device with controllable purification scope, a main body is driven to adjust angle by the steering mechanism, so the water mist spraying scope of a
fog gun
machine is expanded, and thedust removal effect of the
fog gun
machine is improved; the collection plate is driven to contract and release by the
water circulation mechanism, so rainwater is collected for the
fog gun
machine touse by the collection plate, and the use cost of the fog gun machine is reduced.