CYLINDER DEVICE

A cylinder device includes a piston slidably provided within a cylinder and configured to divide an inside of the cylinder into two chambers, a piston rod connected to the piston and configured to extend to an outside of the cylinder, a first passage through which a working fluid flows as the piston moves, a second passage through which the working fluid flows as the piston moves, and a damping force generating mechanism provided to the first passage and configured to generate a damping force, wherein the damping force generating mechanism includes a first valve that opens and closes the first passage, a second valve of which inner and outer circumferences are both movable in an axial direction and has a third passage through which the working fluid flowing out of the first passage flows, and a third valve of which an inner circumference is fixed.