Reliable ZTA composite ceramic/ GH3536 nickel-based alloy brazing joints were fabricated by AgCuAlTi filler. The effects of brazing temperature and holding time on the interfacial microstructure and mechanical properties of the brazing joints were investigated. The typical interfacial structure of the joint brazed at 980 ℃ for 10 min was ZTA/TiO + Ti₃(Cu,Al,Ni)₃O/Ag(s,s) + Cu(s,s)/AlNi₂Ti + Ti₂Ni/Fe-Cr + Ni-Fe-Cr/GH3536. The two components of Al₂O₃ and ZrO₂ in the ceramic matrix participated in the interfacial reactions together, Ti₃Cu₃O was formed by Al₂O₃ with Ti in the liquid filler and ZrO₂ reacted with Ti to form TiO and Ti₃Cu₃O. Ti₃(Cu,Al,Ni)₃O was formed by Al and Ni solid-solubilized in Ti₃Cu₃O. With the increase of the brazing temperature and holding time, TiO, Ti₃(Cu,Al,Ni)₃O and AlNi₂Ti layers thickened, the joint brazed at 980 ℃ for 10 min had the maximum shear strength of 123 MPa. When the brazing temperature exceeded 980 ℃ or holding time was longer than 10 min, TiO on the ceramic side was converted to Ti₃(Cu,Al,Ni)₃O. Meanwhile, a large amount of generated AlNi₂Ti excessively consumed Ti in the filler. So the Ti₃(Cu,Al,Ni)₃O layer was no longer continuous, which ultimately led to a decrease in the shear strength of the joint.