Abstract: The mechanisms of TiO2 films superhydrophlicity are introduced. The methods for realizing visible-light-driven superhydrophilicity of TiO2 thin film，including constructing rough films，precious metal deposition，ion doping，surface sensitization，semiconductor coupling ，TiO2/SiO2 compositing and multiple modifications are discussed. In addition，the existing problems of superhydrophilic TiO2 are addressed，such as complicated preparation technology，rigid modification conditions and short time of superhydrophilicity. Using the sol-gel method and combining multiple modifications are effective methods to resolve these problems in the future.

Key words: visible-light- driven, superhydrophilicity, TiO2 thin films, modification methods

摘要： 介绍了TiO2薄膜的超亲水机理，论述了实现TiO2薄膜可见光响应超亲水性的改性技术，主要包括构建粗糙结构薄膜、贵金属沉积、离子掺杂、表面光敏化、半导体复合、TiO2/SiO2复合、多种改性方法联合使用等方法。总结了目前超亲水TiO2薄膜主要存在制备工艺复杂、改性条件苛刻、亲水寿命短等问题，并指出采用溶胶-凝胶法，利用多种改性方法的联合使用是解决这些问题的重要研究方向。

关键词: 可见光响应, 超亲水性, TiO2薄膜, 改性