Abstract: Based on analysis of reclaimed water reuse in Taiyuan city，the reuse directions of reclaimed water system from sewage treatment plants and buildings reuse are presented and water models suitable for Taiyuan city are studied． Analysis result shows that，the reclaimed water reuse rate in Taiyuan is low，the construction of reuse project should be accelerated， and give a priority to the development of reclaimed water system from sewage treatment plants to industry ＆ landscape meanwhile constructing reclaimed water system for buildings． Combined the characteristics of terrain with construction schedule，in view of the old city，new town，the edge of the city area and industrial area，different reuse models are adopted．