Integrated observation buoy is a simple and cost-effective buoy for offshore, estuary, river, and lakes. The shell is made of glass fibre reinforced plastic, sprayed with polyurea, powered by solar energy and a battery, which can realise continuous, real-time and effective monitoring of waves, weather, hydrological dynamics and other elements. Data can be sent back in the current time for analysis and processing, which can provide high-quality data for scientific research. The product has stable performance and convenient maintenance.