Abstract: To study the bearing performance of the Tibetan beam-column joint, a full-scale joint and a repaired joint fabricated based on a typical joint in Potala Palace as the prototype were statically tested under vertical uniform and concentrated loads successively. The failure mode, stress state of each component, force-transferring mechanism and characteristics of load-displacement curve of the joint under vertical load were analyzed. The bearing stiffness, yield load and ultimate load of the joint were determined. The repair effect of replacing Dianmu on bearing performance of the joint was explored. Finally, the theoretical calculation formulas of mechanical indices of the joint were proposed. The results show that under vertical load, the beam and Gongmu are bent along the grain, the Gongmu and Dianmu are compressed perpendicular to the gain, and the column is compressed along the grain. Different components of the joint work together via the pressure and friction of the contact surfaces and the compression and shear of the dowels. The effective compression areas of the joint under uniform load and concentrated load are different, leading to the change in bearing stiffness of the joint. Dianmu is the weakest compressive component of the joint, and it fails with the partial embedding at the bottom and compressive yielding perpendicular to the grain at the top. The compressional stiffness under uniform load and more than 80% of bearing capacity of the damaged joint can be restored by the restoration measure of replacing Dianmu. The theoretical calculation formulas of bearing stiffness, yield load and ultimate load are verified by experimental results, which can provide reference and basis for the evaluation of the bearing performance of Tibetan beam-column joints with different sizes.