Taking the disc brake as the research object, the three-dimensional model established by Solidworks is imported into ANSYS Workbench, and its strength and modal simulation analysis are carried out. Taking the disc brake as the research object, the 3D model established by SolidWorks is imported into ANSYS Workbench, and the strength and modal simulation analysis are carried out then. Using the maximum stress point and maximum deformation position under the emergency braking state, combined with the results of modal analysis cloud chart, the resonance range is verified by comparing with the natural frequency, which provides reference for the actual tests and structural improvement.