A power tool which is adapted to drive a tool bit in a longitudinal direction of the tool bit and perform an operation, comprising: a driving mechanism (113, 115, 117) which drives the tool bit, a motor which has a brush and configured to drive the driving mechanism (113, 115, 117), a position of the brush being selectively switched in a first rotational position in which a rotational shaft of the motor rotates in a predetermined first direction and a second rotational position in which the rotational shaft of the motor rotates in a second direction opposite to the first direction, a switching member which is manually operated by a user for switching the position of the brush and is movable between a first position which positions the brush in the first rotational position and a second position which positions the brush in the second rotational position, a main body which holds the driving mechanism (113, 115, 117), the motor and the switching member, and a main handle which is biased by a biasing member in the longitudinal direction of the tool bit, which is arranged between the main body and the main handle, and the main handle is relatively movable with respect to the main body in a state that the biasing member biases the main handle, and the vibration caused on the main body during the operation is prevented from being transmitted to the main handle, wherein the switching member is manipulateable by a user from outside the main handle, and the main handle includes an interference avoidance part (165a, 165b) which avoids interference between the switching member and the main handle when the switching member is positioned in the first position or the second position and the main handle is moved with respect to the main body. a driving mechanism (113, 115, 117) which drives the tool bit, a motor which has a brush and configured to drive the driving mechanism (113, 115, 117), a position of the brush being selectively switched in a first rotational position in which a rotational shaft of the motor rotates in a predetermined first direction and a second rotational position in which the rotational shaft of the motor rotates in a second direction opposite to the first direction, a switching member which is manually operated by a user for switching the position of the brush and is movable between a first position which positions the brush in the first rotational position and a second position which positions the brush in the second rotational position, a main body which holds the driving mechanism (113, 115, 117), the motor and the switching member, and a main handle which is biased by a biasing member in the longitudinal direction of the tool bit, which is arranged between the main body and the main handle, and the main handle is relatively movable with respect to the main body in a state that the biasing member biases the main handle, and the vibration caused on the main body during the operation is prevented from being transmitted to the main handle, the switching member is manipulateable by a user from outside the main handle, and the main handle includes an interference avoidance part (165a, 165b) which avoids interference between the switching member and the main handle when the switching member is positioned in the first position or the second position and the main handle is moved with respect to the main body.