The present study investigates the welding of Ti60 titanium alloy T-joints using double laser welding technology. The objective is to examine the surface and internal quality of the joint, analyze the microstructure of each area using an optical microscope, measure the hardness of the joint, and assess the tensile properties of the joint at varying temperatures. The experimental results show that the T-joint exhibits excellent surface and internal quality after being welded with the specified process parameters, with no noticeable defects. Due to variations in the thermal cycle state during welding, the microstructure of each joint area differs across the welding process. Specifically, as the distance from the center of the weld decreases, the grain size gradually increases while the β phase decreases. Moreover, the α and α′ phases experience a gradual increase. In terms of micro-hardness, the heat-affected zone exhibits the highest values, followed by the weld zone, and finally the base metal zone with the lowest values. Tensile testing at different temperatures indicates that the tensile fracture occurs within the base metal. Furthermore, with increasing tensile temperature, both the tensile strength and yield strength decrease gradually, while elongation increases. Notably, the rate of change with temperature is greater above 550 ℃ compared to below.