Xi'an is the city where is extremely short of water resource. Water resource supply is insufficient to meet the various demands. In order to improve the states of water supply, utilization of reprocessed water is an effective approach. On the basis of the study on the current situation of water resources, sewage and re-processed water used in Xi'an City, the authors put forward some reasonable proposals and measures for the problems faced in the utilization of reprocessed water resources. The problems that must be solved include the capital, prices, and market, as well as how to play the government's policy orientation, macro-control, and so on.