The prospect and ways of sewage treatment and reuse, the exiting problems in sewage treatment and reuse, the reuse scope and the countermeasures should be adopted are elaborated.

• 污水处理回用开辟了第二水源,减少了城市新鲜水的取用量,缓解了供需矛盾,是城市节水的重要途径之一,对缺水城市意义重大。