An engraving tool including: a housing, and a terminal piece is disposed in the housing; a driving motor having one end connected to the terminal piece; and a cutting tool assembly connected to a driving end of the driving motor; the terminal piece is configured to connect with an external power supply, and the driving motor is configured to drive the cutting tool assembly to perform telescopic movement in an axial direction. The engraving tool is directly supplied by an external power source, thereby enhancing the power supply stability and adaptability. The drive motor directly drives the tool assembly to extend and retract axially, allowing for adjustment of the cutting tool assembly's extension length. This eliminates the inconvenience associated with traditional engraving tools that rely on manual adjustment or fixed extension structures, as well as the issues of unstable engraving depth, thereby facilitating improved engraving accuracy.