The invention discloses a self-energy-supplying system for monitoring water quality of a water area of a scenic region.The system comprises a command center and a monitoring terminal, the monitoring terminal comprises a bearing floating body, the bearing floating body is internally provided with a vibration power generation unit, a power source management unit, a processor unit and a wireless communication unit, a solar power generation unit is arranged above the bearing floating body, a sensor unit is arranged below the bearing floating body, the bearing floating body is connected with the water bottom through a fixed rope body, the vibration power generation unit and the solar power generation unit are connected with the power source management unit, and the power source management unit is connected with the processor unit, the wireless communication unit and the sensor unit.According to the system, self-energy-supplying is conducted by converting wave energy and solar energy into electric energy, power consumption for monitoring water quality of the water area is met, requisite conditions are created for wireless monitoring of water quality, and ceaseless supply of electricity energy can be guaranteed.