TiO2/glass film was prepared by a solgel method with titanium tetrabutoxide as precursor,and used in photocatalytic degradation of 4Chlorophenol(4CP)in aqueous solution.The crystal type and size of TiO2 in film prepared in different experimental conditions were characterized by using XRD.The experiments indicated that the TiO2 particles in different film appear regular anatase structure with size about 833nm after heating treatment at 500℃ temperature,and the film coated 5 layers of TiO2 sol in the case of higher(pH≥10)and lower pH value(pH≤2) showed a higher catalytic activity.The relationship between initial 4CP concentration(C0) and reaction rate(r0) follow LangmuirHinshelwood equation,and the photocatalytic degradation of 4CP(C0≤07mmol·L-1)can be expressed by first order kinetics. TiO2 / glass film was prepared by a solgel method with titanium tetrabutoxide as precursor, and used in photocatalytic degradation of 4Chlorophenol (4CP) in aqueous solution.The crystal type and size of TiO2 in film prepared in different experimental conditions were characterized by using XRD.The experiments indicated that the TiO2 particles in different film appear regular anatase structure with size about 833nm after heating treatment at 500 ℃ temperature, and the film coated 5 layers of TiO2 sol in the case of higher (pH≥10) and lower pH value (pH≤2) showed a higher catalytic activity.The relationship between initial 4CP concentration (C0) and reaction rate (r0) Hinshelwood equation, and the photocatalytic degradation of 4CP (C0≤07mmol·L-1) can be expressed by first order kinetics. 