Laboratory experiments were carried out to investigate the behavior of Q460 high strength angle members under axial compression via the static testing method. The various supporting conditions, including the spherical hinge, single knife-edge and double knife-edge bearing, are applied to study their effects on bearing capacity of members. The results show that the supporting conditions can represent the behavior of specimens. Specimens with small slenderness ratio of 30 to 45, of which the ultimate bearing capacity are determined by strength of steel instead of slenderness ratio, are subjected to a local buckling failure. While specimens with large slenderness ratios of 60 to 80 are mainly subjected to global bending instability. Comprehensive comparisons indicate that the test results are in good agreement with the calculations from the American regulation ASCE10-97, and are significantly greater than those from the Chinese regulation of DL/T 5154-2002.