Abstract: The joints of high-temperature titanium alloy Ti-55 and Ti-60 are welded by electron beam welding,the microstructure and tensile performance of the joints are analyzed,and the high-temperature tensile and permanence tests of Ti-60 joints after heat treatment are developed in order to study the applicability of the joints.These high-temperature titanium joints have fine weld bead shape and less aspect weld faults.The tensile performaces of room temperature and high temperature for Ti-55,Ti-60,and Ti-55 with Ti-60 joints have been tested respectively.The results show that acerose α'phase in high-temperature titanium alloy joints has been reduced by double heat treatment technology,the electron beam welding for different high-temperature titanium alloy weld with similar element has fine applicability,and the performance of the high-temperature titanium alloy joints has been enhanced through double heat treatment.