We rely on the biological response and environmental degradation to identify the water pollution in the ecology. In order to be able to detect and quickly lock the scope of the pollution, we design an anchored buoy that can detect the quality of the water, and timely notify the relevant units at the first time of the pollution detected and carry out the initial filtration. Its main function at ordinary times is to monitor the water quality, and transmit the detected information to the environmental protection unit through the IoT and the GPS positioning system to find the source of pollution.