Based on distribution characteristics of urban rainwater resources utilization in the Loess Plateau of Uansu Province,Lanzhou,Dingxi,Pingliang,Qingyang and Tianshui Cities were selected to analyze variable patterns of precipitation characteristics and calculate the potential of urban rainwater resources utilization for the main cities.Results showed that the average theoretical potentials of rainwater resources for Lanzhou,Dingxi, Pingliang,Qingyang and Tianshui Cities were 5.71 × 10⁷,8.61 × 10⁶,2.38 × 10⁷,7.62 × 10⁶and 3.21 × 10⁷m³,respectively.The average realizable potentials of rainwater resource for Lanzhou,Dingxi,Pingliang,Qingyang and Tianshui Cities were 2.91 × 10⁷,4.65 × 10⁶, 1.43×10⁷, 4.87 × 10⁶ and 1.95×10⁷m³,respectively.The results indicates that there is a good prospect in utilization potential and exploitation of urban rainwater resources for the main cities,which provides reference for the effective management and high-effective utilization of rainwater resources in the loess plateau.