An electric oscillating tool which actuates a tool around a spindle is provided. The electric oscillating tool comprises a motor, the spindle which is driven by the motor, and a driving transmission member which transmits a rotational output of the motor to the spindle. The driving transmission member includes an eccentric moving member, a driven arm, a spindle connecting arm, and a pin which connects the driven arm and the spindle connecting arm in a relatively rotatable manner. The eccentric moving member comprises an eccentric shaft which moves eccentrically around a rotational shaft of the motor, a first bearing, and a second bearing.