Vacuum cleaner

The invention discloses a vacuum cleaner which is linked with a dedusting device and can improve high dust collection efficiency. The vacuum cleaner includes a housing, the dedusting device, a cylinder brush, and a single driving source. The bottom surface of the housing is provided with an air inlet for inletting air and an absorption prevention channel communicated with the air inlet. The dedusting device is arranged on the housing for hitting an object to be cleaned at the absorption prevention channel to make foreign matters come off from the object to be cleaned. The cylinder brush is rotationally arranged on the bottom surface of the housing to remove the foreign matters from the object to be cleaned. The drive source supplies drive force to make the dedusting device and the cylinder brush to rotate. According to the invention, by means of the dedusting device for hitting the object to be cleaned to make foreign matters come off through up and down movement, the cylinder brush for brushing the foreign m