Seven buckling-restrained braces were designed to verify the influence of different connection modes and structure modes on hysteretic behavior of buckling-restrained brace.They include two connections of the bolt connection and the articulated connection, three kinds of core material section form of "Ten" glyphs, "T" shape "and" one "glyph, two kinds of core material production method of end welding type and middle cutting type, and two combinations way of along the core material longitudinal full-length welding and only in the working section welding. In this paper, the load capacity, secant stiffness, energy dissipation coefficient and ductility of buckling constrained support are analyzed by the quasi-static loading test. The tests results show that the hysteretic curves of 7 specimens are full and stable,with energy dissipation ability, and the bearing capacity, energy dissipation coefficient and ductility increase with the increase of load displacement, and the secant stiffness decreases with the increase of load displacement. The restoring force model is of the typical bilinear characteristics and the connection mode and the structural characteristics possess no obvious effect on the hysteretic performance of buckling constrained support. The ratio of material properties, generosity and clearance and thickness of the core material are the main factors influencing the hysteretic performance. The results show that the two angles have synergistic work performance. Improving welding quality and increasing the radius of curvature of the transition arc near the limit card are the key factors to enhance the hysteretic performance of the end welded and the central cutting buckling constrained support.