在当代中国,水资源的发展状况并不乐观。是故,水资源的保持及充分利用非常重要。再生水作为水资源的一种,其对于水资源的可持续利用意义重大。文章分析了我国水资源的现状及再生水概念法律界定之意义,在借鉴国内外已有经验的基础上,文章探讨了再生水概念法律界定之方法,进而提出了再生水的法律概念并对再生水和中水进行了界分,以期能对我国再生水相关立法起到支撑作用。 In contemporary China, the development of water resources is not optimistic. Therefore, the maintenance and full utilization of water resources are very important. Reclaimed water, as a kind of water resources, is of great significance to the sustainable utilization of water resources. The article analyzes the current situation of water resources in our country and the meaning of the legal definition of reclaimed water. On the basis of the experience of domestic and foreign countries, this paper discusses the concept of reclaimed water, and then puts forward the legal concept of reclaimed water. Carried out a division, with a view to China’s renewable water-related legislation to play a supporting role.