Abstract: A method for controlling the crusher, which crusher includes at least a frame, a crushing means with a cycle, as well as an actuator for moving the crushing means. In the method, at least first data is determined, which is at least one of the following: the power input in the actuator, the crushing force, the particle distribution of the crushed material produced by the crusher, or the quantity of crushed material produced by the crusher. The cycle frequency of the crushing means is controlled on the basis of the first data. The invention also relates to a crusher, in which the cycle frequency of the crushing means is adjusted according to control data from the control unit.