This study was to evaluate the blood coagulation changes of commercially pure Ti surface after an electrochemical anodization treatment. Anodization treatment was used to produce a porous Ti-O layer on ground Ti surface for dental implant application. The blood coagulation of surface modified Ti specimens was analyzed using kinetic clotting time method and platelet adhesion observation. Results showed that a network TiO2 layer was developed on Ti surface after anodization treatment. The clotting time of surface modified Ti specimens was shorter than that of the untreated Ti specimen. Surface modified Ti specimens had better platelet adhesion, activation and aggregation. According to the present results, we may conclude that the blood coagulation of Ti surface can be improved using an electrochemical anodization treatment via the formation of a network-structured TiO2 surface layer.