Abstract:Abstract : The equations governing human-structure static interaction are derived. The matrix of mass, stiffness and damp of system are defined from these equations. Then, the frequency and damp of the system are solved by using the state-space method. Base on the above, the influences of ratio of mass, frequency, damp coefficients of human to structure and human location on the dynamic characteristics of systems are studied. The result shows that human will reduce, and sometimes also increase the frequency of the structure. The main factors affecting the dynamic characteristics of systems are ratio of mass, frequency coefficients of human to structure and human location. The damp of body has little effect on the dynamic characteristics of systems. At last, a vibration test is carried out to verify the human-structure interaction. The test shows that the body with different postures has different dynamic characteristics and different effects on systems.