Disclosed is a multi-functional engraving machine, comprising a base (1), upright columns (2), an engraving platform and a cutter mechanism. The engraving platform comprises a movable platform (3) and a workpiece clamping device (4). The movable platform (3) is provided with an automatic rising-lowering platform. The automatic rising-lowering platform comprises a platform surface (5), a platform surface rising-lowering frame (6) and a platform surface automatic rising-lowering mechanism. The platform surface automatic rising-lowering mechanism is fastened on a beam in the middle of the movable platform (3). The platform surface rising-lowering frame (6) is fixed to the platform surface automatic rising-lowering mechanism. The platform surface (5) is fixed to the platform surface rising-lowering frame (6). The multi-functional engraving machine using the above-mentioned structures can enable the rising-lowering platform to perform automatic rising-lowering by means of a program code. When a plane is engraved, the platform surface rises, and when a three-dimensional object is engraved, the platform surface automatically lowers. Thereby, the present invention has a high degree of automation, and is widely used and is easy and safe to operate.
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