Abstract: Lap brazing tests of TA2 titanium was carried out by using 37.5Ti-37.5Zr-15Cu-10Ni amorphous foil and powder filler metals, respectively. The melting properties, microstructure and phase composition of the filler metals,brazing interface structure and tensile-shear properties of the brazed joints were studied. The results show that the amorphous foil has smaller solid-liquidus temperature difference, which can better inhibit the formation of interfacial brittle compounds. The microstructure of the powder filler metal is composed of matrix and various crystal phases, while the microstructure of the amorphous foil filler metal has no obvious grains. At the brazing interface, Cu and Ni elements rapidly diffuse into the matrix, and Ti element rapidly diffuses into the filler metal. During brazing of TA2 titanium at 920℃ for 15 min, the thickness of the brittle layer and the intercrystal infiltration area of the joint with the amorphous foil is lower than that of the joint with the powder filler metal, and mutual diffusion of the elements is relatively more sufficient.Reducing the brazing temperature or shortening the holding time properly can weaken the erosion of the interface elements to the matrix. The plasticity of the joint with the amorphous foil is slightly better than that of the joint with the powder filler metal, while the tensile shear strength is lower. It is caused by thicker brittle layer at the interface of the joint, producing more brittle compounds.