Abstract: In this paper, a steel grid braced steel frame is proposed, and its performance is analyzed under monotonic and cyclic loading. The results show that compared with the chevron-braced steel frame, the bearing capacity of the steel grid braced steel frame is increased by about 50%, and the initial stiffness is significantly increased under monotonic loading. The hysteretic curve of the steel grid braced steel frame is fuller, and the energy dissipation coefficient is higher than that of chevron-braced frame under cyclic loading. When the inter-story drift ratio of the structure is less than 1/50, the vertical displacement at the connection between the steel beam and the brace is relatively small, with a maximum value of 11.35 mm, and the brace has not experienced out-of-plane instability. When the inter-story drift ratio of the structure is greater than 1/50, the vertical displacement at the connection between the steel beam and the brace increases rapidly. The height and thickness of the rib plate at the circular steel tube joints significantly influence the monotonic bearing capacity, hysteretic strength, strength degradation, and energy dissipation coefficient, but the thicknesses of the inner and outer circular steel tubes have little influence.