To improve rigidity of a camshaft in a four-bar linkage mechanism type continuously variable transmission.

This four-bar linkage mechanism type continuously variable transmission 1 includes: an eccentric mechanism 4 having a rotary disk 6 and cam disk 5 as a separate body from an input shaft 2; a rocking link 18 axially supported by an output shaft 3; a one-way clutch 17 provided between the rocking link 18 and the output shaft 3; a connecting rod 15; and a pinion shaft 7 inserted into the input shaft 2. A plurality of cutout holes 2a are formed in the input shaft 2, and the pinion shaft 7 is exposed from the cutout holes 2a. A receiving hole 6a for receiving the cam disk 5 is provided at the rotary disk 6, internal teeth 6b are formed in an inner circumferential surface of the receiving hole 6a, and the internal teeth 6b meshes with the pinion shaft 7 exposed from the cutout holes 2a. The input shaft 2 is provided with a cylindrical part 2c located at both sides in an axial direction of the cutout holes 2a. The cylindrical part 2c receives the load of the connecting rod 15.