The invention discloses a device for removing dust blocking in a filter of a dust collector; the device comprises a shell (1), a link spool (2) and a pneumatic vibrator wheel (3); an exhaust passage, a blocking removal air passage, a positive pressure chamber, a negative pressure chamber, a normally closed valve port, a normally opened valve port, and a normally closed side valve port are arranged in the shell; the link spool is provided with a normally closed spool, a normally opened spool, a normally closed side spool, a spring, a button and a link; the pneumatic vibrator wheel is provided with an eccentric block and a wind wheel cover; in blocking removal, the normally closed spool is separated from the normally closed valve port, the normally opened spool blocks the normally opened valve port, and the normally closed side spool is separated from the normally closed side valve port; atmospheric air passes through the blocking removal air passage, the pneumatic vibrator wheel, the normally closed valve port, the negative pressure chamber and the fan and enters the positive pressure chamber to form a positive pressure flow, part of the positive pressure flow passes through the exhaust passage and enters atmosphere, the rest of the positive pressure flow passes through the filter and enters the atmosphere through a dust collection barrel; the device employs double blocking removal, namely vibration and blowing, and dust blocking in the filter of the dust collector can be removed efficiently, conveniently and quickly.