Abstract: Based on identification theory, an experiment identification flow for guideway joint dynamics characteristics is proposed, including marking test points, testing frequency response functions (FRF), dealing with test data, and programming identification algorithms. Dynamics testing and parameter identification was conducted on a THK guideway joint that had been assembled in the bed. Using the Matlab open source identification algorithm, dynamics characteristics for a normal direction were obtained, including mass matrix, stiffness matrix, viscosity damping matrix, and structural damping matrix. Validity of identifying guideway joint characteristics was verified.