In view of the deviation between the quarterly water intake and the annual average water intake or the corresponding quarterly average water intake in previous years reported by Nanjing water users. A Measurement Statistics Reverification Technology System for water intake measurement in Nanjing has been developed. The system collects flowmeter readings in real time through the camera，identifies the flow data through image processing and template matching，and verifies the water intake data by comparing the data reported by water users. The practical application shows that the system can supervise the data of water users，make statistics of water consumption，and provide technical support for water resources supervision.