Yanhe River is the first-order tributary of the Yellow River, which flows across some significant cities and towns in the southern area of the northern Shaanxi Province, such as Ansai, Yan'an, and Yanchang. It is the main river that causes floods and damages to the above-mentioned cities and towns, so it is very im-portant for flood prevention to develop flood forecasting scheme. On the base of analyzing the characterisctics of storms and floods in the Yanhe River Basin, and on the principle of increasing the forecasting accuracy of the heavy floods and properly taking the normal floods into consideration, the system model is applied with the concept of flood formation and correlation diagram to develop the Yanhe River flood forecasting scheme mainly for the sections of Yan'an City, as well as Ansai and Yanchang County. This scheme can be used tentatively in practice.