Abstract: To improve the comprehensive performances and application safety level of the TA2 seamless steel tube，the Φ19 mm×1.4 mm TA2 seamless steel tube is produced via different rolling-deforming processes. The said tube is then subjected to the heat treatment processes of vacuum annealing and 4 h holding so as to investigate the influences by the different deformation amounts on the dimensions，microstructure and tensile properties of the tube. As a result the optimal rolling process is determined. Furthermore the TA2 seamless steel tube is put through the vacuum heat treatment at different temperatures of 510 ℃，540 ℃ and 570 ℃ to identify the influences of different heat temperatures on its tensile properties and microstructure. It is shown via the relevant studies that the TA2 seamless steel tube as rolled with the three-pass rolling process，and heat treated at 540 ℃ presents minimum dimensional deviation，homogeneous and fine equiaxed microstructure，the best plasticity and satisfactory overall performances，having met the application requirements for the heat exchanger.