The tensile mechanical properties of commercially pure titanium TA2 within the strain rate scope 1×10-4 ~1×10-2 s-1 have been tested at room temperature, and the stress-strain curves of different strain rates have also been obtained. The results show that the stress-strain curve of commercially pure titanium TA2 at room temperature is significantly sensitive to strain rate. The strength parameters such as flow stress increase with the higher strain rate, while the plastic parameters such as elongation and area reduction decrease. The strain rate sensitivity index of TA2 is great. Through the theoretical analysis of Hollomon empirical formula () and the experimental verification of TA2, it is found that the strain rate sensitivity index m and strain hardening index n are related with strain and strain rate, respectively and the relation between them is power equation. Therefore, the Hollomon empirical formula is revised, and the revised Hollomon equation of TA2 is obtained. Compared with traditional Hollomon empirical formula and Johnson-Cook model, the revised equation has better agreement with experimental results and can depict the tensile mechanical property of TA2 more accurately