Abstract: Two different processing technologies were used to prepare φ8 mm×1mm small diameter TA2 tubes. The microstructure, room temperature tensile properties, ultrasonic flaw detection and other process properties of TA2 tubes prepared by the two processes were compared and studied. The results show that compared with TA2 tubes of cold rolling processing rate 95% and cold rolling annealing room processing rate of 45%-65%, TA2 tubes rolled by the process of cold rolling processing rate 90% and cold rolling annealing room processing rate of 38%-40% have less fluctuation of ultrasonic flaw detection amplitude, better process performance and better internal and external surface quality. Consequently, properly reducing the cold rolling processing rate is conducive to obtain small diameter TA2 tube with better performance.