The present invention relates to the technical field of environmental monitoring, and discloses an environmental monitoring system with unmanned boats as a carrier and use thereof The environmental monitoring system comprises the unmanned boat devices, wherein the unmanned 5 boat devices are in two-way signal connection with a network communication base station, and the network communication base station is in two-way signal connection with an integral operation platform and a cloud server. According to this environmental monitoring system with unmanned boats as a carrier, a plurality of unmanned boats are disposed for environmental monitoring, due to a dissolved oxygen sensor, a COD sensor, a turbidity sensor, a PH sensor and a temperature sensor 0 disposed on the unmanned boat, the environmental monitoring is more comprehensive, and due to a GPS module, a camera module and a laser radar module disposed on the unmanned boat, the automatic planning of a track and real-time obstacle avoidance can be realized,