Objective To study the dynamic characteristics of the frame of roll cutting device, and to offer basis for the analysis and evaluation of the work performance of vegetable paper facial mask molding machine. Methods Entity model of the frame was established with Unigraphics NX, and modal analysis was carried out using Ansys Workbench, and then the first six orders of natural frequencies and the variation of vibrational mode were extracted and analyzed. Results The minimal natural frequency of the frame was 334.74 Hz. The Maximal amplitude occurred in the fourth order vibrational mode, which was in the middle of the front-axle beam in the right support plate. Conclusion The excitation frequency of the frame was far smaller than the minimal natural frequency. No resonance phenomenon and severe acoustic noise would occur.