| For the purpose of investigating the seismic behavior of rocking truss-frame with dampers, finite element models were established by software OpenSees, including frame structure, brace frame structure, rocking-truss-frame structure and rocking-truss-frame structure with displacement dampers. Based on the result of modal analysis, pushover analysis and time-history analysis, the characters of stiffness, dynamic response and damage were discussed. In order to illustrate influence of frame column root connection and dampers, four finite element models were established, which have different types of frame column roots and dampers. According to the analysis, rocking-truss-frame system has great seismic performance. Displacement dampers can improve structures stiffness and capacity, while velocity dampers can decrease story shear force. Pin-supported column roots are helpful to decreasing dynamic response and plastic damage of first floor columns.