Low frequency cyclic loading experiments are carried out with six diagonally crossing reinforced coupling beams. The ratio of the span to depth is 1.0,1.5,2.0 and 2.5. The paper analyzes the behavior of crack development, failure mode, ductility, stiffness degeneration, hysteretic and energy dissipation of these specimens. The results show that the aseismatic behavior of properly reinforced diagonally cross reinforced coupling beams is better than conventionally reinforced coupling beams, and this kind coupling beam can get no less than 3.5 chord rotation ductility at the 0.20 ratio condition of shear to compression. For diagonally crossing reinforced coupling beams with the small ratio of span to depth, the mechanism of the main force transfer system is the main diagonal struttie model and stirrup truss model