The invention relates to the field of mining equipment, and discloses an eccentric mechanism of a cone crusher. The eccentric mechanism comprises an eccentric shaft sleeve, an upper axial thrust bearing and a lower axial thrust bearing, wherein the eccentric shaft sleeve comprises a shaft sleeve inner ring, a shaft sleeve outer ring and a shaft sleeve ring; the upper end surface of the shaft sleeve ring, the shaft sleeve inner ring and the shaft sleeve outer ring form an upper bearing groove; the upper axial thrust bearing is installed in the upper bearing groove; the lower end surface of the shaft sleeve ring and the shaft sleeve inner ring form the lower bearing groove; the lower axial thrust bearing is installed in the lower bearing groove; the shaft sleeve inner ring comprises an eccentric top part and an eccentric bottom part; a central through hole of the eccentric top part and a central through hole of the eccentric bottom part are communicated via a coupling stepped hole which is communicated with the upper bearing groove, the lower bearing groove and the central through hole in the eccentric bottom part via a thin oil channel; the lower bearing groove is communicated with the central through hole in the eccentric bottom part and the upper bearing groove via a thin oil channel. The eccentric shaft sleeve in the eccentric mechanism is good in positioning effect, and the bearing on the eccentric shaft sleeve is convenient to lubricate.