The invention discloses a power tool. The power tool comprises a shell, a motor and an output shaft, wherein the motor is arranged inside the shell and is used for outputting rotation power; the output shaft is driven to rotate by the motor; the output shaft comprises an output end and a second end, wherein the output end is connected with a working head, and the second end is positioned at the other end of the output end; when the power tool is in a nonworking state, the output shaft can move relative to the shell and along the axial direction of the output shaft; when the power tool is in a working state, the movement of the output shaft along a first axial direction is limited; the first axial direction is an axial direction from the output end to the second end. The power tool disclosed by the invention is capable of realizing different protrusion degrees of the working head at different positions by virtue of the output shaft, capable of realizing quick switching between different working conditions, especially suitable for being applied to a narrow and small space, convenient to operate, free of arrangement of extra accessories and low in cost.