Abstract: UG was used to design and model the structure of the five-axis engraving machine, and analyze the static and dynamic characteristics of the model, it is to ensure that the mechanical structure of the designed small five-axis engraving machine can meet its mechanical characteristics. To begin with, UG was employed to calculate the static characteristics of the guide rail under different loads and different restraint conditions. In addition, UG was applied to analyze the static characteristics of the frame structure. Finally, UG technology was used for modal analysis and harmonious response analysis of the entire engraving machine. The analysis results show that the maximum displacement and deformation of the guide rail is 1.838×10^–6 mm, and the maximum stress is 1.034 MPa, which meets the design requirements. Resonance occurs when the excitation force frequency of the engraving machine is close to the two natural frequencies of 900 Hz and 1950 Hz, but the actual working frequency of the engraving machine is between 0 and 400 Hz, so resonance will not occur. From the analysis, prototype experiment and comparison results that it is concluded that the five-axis engraving machine has good static rigidity, which has reached the design requirements and is better than other engraving machines. This analysis provides a theoretical basis for the optimal design of the five-axis engraving machine structure.