The present invention relates to a tattooing apparatus having a tattooing needle capable of automatically reciprocating in a linear direction. The tattooing apparatus according to the present invention includes a case, a motor disposed inside the case, a cam unit to convert rotation of the motor into linear reciprocation, a link connected to the cam unit and disposed inside the case to be linearly reciprocated by the cam unit, and a needle cartridge that is connected to a lower end of the case and has a tattooing needle to move according to the link and a tattooing ink to flow out along the tattooing needle.
