An elongate auxiliary handle, which is adapted to be removably attached to a power tool in which a tool bit is caused to reciprocate in a predetermined direction, comprising: a mounting part (230; 330) that is adapted to be attached to a power tool body, a movable part (210, 220; 310, 320) that can move with respect to the mounting part (230; 330), and a connection part (240; 340) that connects the mounting part (230; 330) and the movable part (210, 220; 310, 320), wherein: the movable part (210, 220; 310, 320) has a grip part (210; 310) which is adapted to be held by a user and a base (220; 320) which is disposed between the grip part (210; 310) and the connection part (240; 340) in a longitudinal direction of the auxiliary handle, and when the auxiliary handle is attached to the power tool body such that the longitudinal direction of the auxiliary handle crosses the predetermined direction, the movable part (210, 220; 310, 320) is held so as to be movable in the predetermined direction with respect to the mounting part (230; 330) with the connection part (240; 340) as a fulcrum, characterized in that, when the auxiliary handle is attached to the power tool body such that the longitudinal direction of the auxiliary handle crosses the predetermined direction, the connection part (240; 340) and the grip part (210; 310) are disposed, in the longitudinal direction, on opposite sides of a drive axis of the tool bit extending in the predetermined direction. a mounting part (230; 330) that is adapted to be attached to a power tool body, a movable part (210, 220; 310, 320) that can move with respect to the mounting part (230; 330), and a connection part (240; 340) that connects the mounting part (230; 330) and the movable part (210, 220; 310, 320), wherein: the movable part (210, 220; 310, 320) has a grip part (210; 310) which is adapted to be held by a user and a base (220; 320) which is disposed between the grip part (210; 310) and the connection part (240; 340) in a longitudinal direction of the auxiliary handle, and when the auxiliary handle is attached to the power tool body such that the longitudinal direction of the auxiliary handle crosses the predetermined direction, the movable part (210, 220; 310, 320) is held so as to be movable in the predetermined direction with respect to the mounting part (230; 330) with the connection part (240; 340) as a fulcrum, characterized in that, when the auxiliary handle is attached to the power tool body such that the longitudinal direction of the auxiliary handle crosses the predetermined direction, the connection part (240; 340) and the grip part (210; 310) are disposed, in the longitudinal direction, on opposite sides of a drive axis of the tool bit extending in the predetermined direction. the movable part (210, 220; 310, 320) has a grip part (210; 310) which is adapted to be held by a user and a base (220; 320) which is disposed between the grip part (210; 310) and the connection part (240; 340) in a longitudinal direction of the auxiliary handle, and when the auxiliary handle is attached to the power tool body such that the longitudinal direction of the auxiliary handle crosses the predetermined direction, the movable part (210, 220; 310, 320) is held so as to be movable in the predetermined direction with respect to the mounting part (230; 330) with the connection part (240; 340) as a fulcrum, characterized in that, when the auxiliary handle is attached to the power tool body such that the longitudinal direction of the auxiliary handle crosses the predetermined direction, the connection part (240; 340) and the grip part (210; 310) are disposed, in the longitudinal direction, on opposite sides of a drive axis of the tool bit extending in the predetermined direction.