We proposed and demonstrated an all-fiber laser to generate cylindrical vector beams at 1030 nm. The cylindrical vector beams were obtained by exciting high order mode operating in the few-mode fiber inside the laser system, which was implemented through adjusting the angle and transversal dimension of a couple of fiber collimators. The radial and azimuthal polarization beams can be switchable conveniently just by applying twist and pressure to the few-mode fiber.