Abstract: To investigate the antibacterial effect of fabrics treated by nano-TiO_2,the antibacterial property of fabrics treated with four kinds of doped nanoTiO_2 particles,i.e.,TiO_2-SiO_2、ZnO-TiO_2、Cu-TiO_2 and Ag-TiO_2 respectively was studied and evaluated from the viewpoint of kinetics under the condition of ultraviolet light.The results show that the bacterial inhibition rate of all the fabrics treated by the above 4 kinds nano-TiO_2 particles have reached 100% under ultraviolet light,kinetics studies show that the reaction is the first-order kinetics model,and the bactericidal reactions were in accordance with Langmuir-Himshelwood equation well;the fabrics treated by ZnO-TiO_2 has the highest antibacterial reaction rate:(2.185 min~(-1)).