The invention provides a movable dry type filtration and dedusting system for a roadway heading face. The movable dry type filtration and dedusting system controls the heading working face to be in anegative-pressure dedusting state or a positive-pressure air supplying state through an arranged four-way valve; when the system conducts dedusting, a control valve controls a sealing plate to be in ahorizontal position, and dust-containing gas enters a dry filter dust separator through a dust suction hood and a negative-pressure air duct; when the system stops dedusting, the control valve controls the sealing plate to be in a vertical position, a position-pressure air duct communicates with the negative-pressure air duct, fresh air is exhausted to the heading working face through the position-pressure air duct, and the negative-pressure air duct and the dust suction hood, so that it is ensured that the interior of a roadway is in the positive-pressure air supplying state. According to the movable dry type filtration and dedusting system for the roadway heading face, overall movement is achieved through a pneumatic monorail crane control box on the basis of ensuring efficient dedusting, the load capacity of a heading machine is decreased accordingly, and the service life of the heading machine is prolonged; when the system stops dedusting, it can be ensured that the interior of the roadway is in the positive-pressure air supplying state, and workers in the roadway are prevented from anoxia; and the dry filter dust separator can conveniently unload ash, and the time and labor are saved.