River stones are convenient materials and finished products are of good quality and conform to the requirements of the building. River stone can completely replace natural sand. Raw materials stone powder content produced by this river stone sand making machine production line is low, and particle size uniform, with high production efficiency, low operating cost. Stones, by vibrating feeder evenly to jaw crusher for coarse crushing, will then be through belt conveyor into Symons cone crusher for further crushing. After fine grinding, materials will be delivered to the sand making machine for sand making. In meeting the requirements of the finished product granularity, the materials will be fed into sand washing machine to clean. After cleaning, the finished product output by conveyor belt is the finished product. Materials which do not meet the product particle size requirements will be delivered from the vibrating screen to return to the sand making machine for second processing. This forms closed-circuit circulation many times.