The present invention is to provide an eyebrow tattoo machine, which includes a housing; a swinging movement-activating motor located inside the housing and having one end provided with a transmission shaft; an eccentric sleeve mounted around the transmission shaft and protrudingly provided with an eccentric lever offset from the center thereof and facing away from the motor; and a tattoo needle actuation mechanism positioned and pressed against by screws in the housing and configured for driving a tattoo needle at one end thereof to move upward-and-downward along an axis of the machine, and having the other end provided with a round-ended slot. The eccentric lever extends into the round-ended slot so that, once the motor is turned on, the eccentric lever can drive the entire tattoo needle actuation mechanism to swing from side to side with respect to the axis of the machine by using the screws as the fulcrum.