Abstract: Considering the defect of eccentrically braced steel frames, a new braced steel frame system is suggested, which is energy dissipating eccentrically braced steel frames. The experimental data is achieved by a specimen under a cyclic loading, which is verified by nonlinear finite element analyses. Results indicate that the new system may reduce earthquake input energy and breakage of the link, reduce the repairing load of beams and floors and costs after an earthquake, and have preferable ductility and enough lateral stiffness. Meanwhile, some design and amended measures are recommended for the new type protocol.