A dust remover for a vacuum cleaner is provided inside a filter and is rotated by a motor. The dust remover includes: a rigid rotary member perpendicularly coupled to an output shaft of the motor to be rotated according to a rotation of the output shaft; a rotating buffer member assembled with an end portion of the rigid rotary member to be rotatable around a rotary shaft that is in parallel with the output shaft; a striking member having an end portion fixed to the rotating buffer member and another end portion contacting the filter; and an elastic member having an end portion coupled to the rotating buffer member and another end portion coupled to the rigid rotary member so as to apply an elastic recovery force to the rotating buffer member to rotate in a direction in which the rigid rotary member rotates.