AI recognition of water gauge and water level information through image recognition technology can realize video image, water level, rainfall monitoring, alarm and storage. This product is mainly used in: water conservancy, hydrology, hydropower stations, water diversion and dispatching projects, sluice and dam pump joint intelligent dispatching, sewage treatment plants, water plants, environmental protection, etc. According to the current input image, the current water level data can be obtained by intelligent analysis, with resolution of 0.01m; The virtual electronic ruler is created by artificial intelligence, to project the main reference object, no need of artificial water gauge, the resolution is 0.01m; Automatic light supplement function at night or in gloomy weather, image recognition speed is 0～500ms; With alarm, overrange, abnormal data filtering, corresponding coding output function; The artificial intelligence has solved the problem of exceeding the range of water level variation, with no need of setting the automatic adjustment of the water level range, and the system can perform precise monitoring function.