Abstract: The 1.6 mm thickness CP-1 pure titanium strip was obtained by strip rolling method.In order to improve the plastic forming performance and guide the stamping forming process, the microstructure, tensile properties and surface micro-hardness of pure titanium stripes under different heat-treated temperatures or with different surface states were analyzed.Also, the cupping test values (IE) were measured.The relationships between IE and heat-treated temperature or the surface state were studied.The results show that the IE value decreases from 6.3 mm to 5.0 mm with the heat-treated temperature increasing from 660 ℃to 800 ℃, and the IE value decreases sharply at higher temperature range.The IE value of pure titanium strip is improved by surface acid cleaning.Within the thickness reduction range of 0.01 mm to 0.13 mm, the IE value is increased from 5.8 mm to 6.2 mm with increasing the thickness reduction.