Abstract: To protect Chinese ancient buildings,aseismic behaviors of wooden structure strengthened by iron-hook are studied through experiments.Based on actual sizes of the 3^rd frame of Tai-He Palace in the Forbidden City,three wooden frame models with a scale of 1∶8 of the prototype structure were built considering tenon-mortise connections.Low cyclic reversed loading tests were carried out by manual loading means and means of load-displacement hysteretic curves and skeleton curves of the structures were obtained.By analyzing their energy dissipation capability,stiffiness degradation and deformation performance were studied.Results show that after the structure is being strengthened by iron-hooks and with their embedding effects,tenon pulled out of the mortise becomes less,stiffness and strength of the structure are enhanced,stiffness degradation of the structure is not obvious,and its deformation performance is still good,however its energy dissipation capability decreases.