Shenzhen river mouth model is characterized by occupying a larger area with six entrances of its branch rivers and their locations spreading, resulting in increasing the collocation difficulty of the water supply system and investment cost. In order to meet the requirements of both the accuracy and cost-saving of the meter used, an intelligent flow meter was first used in the river model test. This meter possesses the advantages of lower speed in starting, broader range in measurement, better
repetition, simple structure, convenience in use and repair and cheap price, and its higher ratio of property to price. The result shows that the effect used is satisfactory and the requirement in test is fully reached.