Abstract: The experimental research was carried out on the mechanical performance of welded aluminum alloy beamcolumn connections strengthened with CFRP． The paper also discussed the feasibility of this strengthening method． The experiments consist of a set of welded group and four sets of strengthened groups specimens． The failure mode， joint stiffness and ultimate bearing capacity of the specimens of different strengthening mode were investigated by comparison． And the effectiveness of different strengthening configurations was analyzed． Bonded CFRP was considered as an effective method to improve the bearing capacity of the welded aluminum alloy beam-column connections． Effective anchoring method，thicker CFRP on the tensile flange would improve the bearing capacity．