In this paper, multi pass cold rolling with large deformation and ball spinning process are used to prepare near α Titanium alloy of Ti-Ta system the extremely thin-walled pipes. The effects of different holding time on the microstructure and properties of the cold rolled tube during recrystallization annealing were studied. The effects of different annealing temperatures above the recrystallization temperature on the microstructure and properties of the extremely thin-walled pipes were analyzed. The results show that the microstructure and properties of this near α Titanium alloy the extremely thin-walled pipes are not sensitive to holding time during annealing, and the range of holding time is wide. The transverse and longitudinal microstructure of the extremely thin-walled pipes in the cold spinning state is fibrous, and the longitudinal is relatively more obvious. The transverse and longitudinal phases of the annealed the extremely thin-walled pipes are all equiaxed. With the increase of annealing temperature, the microstructure grains polymerize and grow up, the strength decreases and the plasticity increase. When the annealing temperature is 620 ℃ ~750 ℃, the extremely thin-walled pipe meets the forming performance requirements of bellows.