Al₂O₃ ceramic/Fe-Ni-Co joints are achieved using Ag-Cu-Ti filler alloy in the study to investigate the dependence of the joint microstructure and mechanical performance on the Ti content. Scanning electron microscope (SEM), energy dispersive X-Ray spectrometer (EDS), X-Ray diffractometer (XRD) and electronic universal testing machine are used to characterize the microstructure and mechanical performance of the joints. The results show that the increase of Ti content can obviously intensify the interaction between Al₂O₃ and Ag-Cu-Ti. A layer of Ti-Al and Ti-O products is observed at the interface of Al₂O₃/AgCuTi. The tensile strength of Al₂O₃/AgCuTi/Fe-Ni-Co joint increase as the Ti content increased from 2 wt% to 8 wt.%, and the tensile strength of brazing joint reached the maximum value of 78MPa. Good reaction layer formed by metallurgical reaction at the interface of Al₂O₃/AgCu4Ti, and the typical microstructure is Al₂O₃/TiAl+Ti₃O₅/NiTi+Cu₃Ti+Ag(s,s)/Ag(s,s)+Cu(s,s)+(Cu,Ni)/Fe-Ni-Co brazed at 890_oC for 5 min. Compared with AgCu4Ti filler, the microstructure of the joints change slightly when addition of the active element Ti to 8 wt.% except for the increase of the thickness of reaction layer adjacent to Al₂O₃ ceramic and accompanied the formation of TiO and Ti₃Al in the Al₂O₃/Ag-Cu-Ti interface.