The invention relates to a buoy type solar drive stream-making aerator. The buoy type solar drive stream-making aerator comprises a suspended carrier, a guide cylinder, a solar panel, an air compressor, an air conduit, and an aeration disc. The suspended carrier and the guide cylinder are integrally connected; the air compressor is arranged inside the carrier; and the solar panel supplying the energy for the air compressor is arranged on the top surface of the carrier. The aeration disc is arranged inside the guide cylinder near the bottom of the guide cylinder and is connected with the air compressor through the air conduit; and a corresponding water inlet and a corresponding water outlet are arranged on the guide cylinder. The solar cell converts the solar energy into the electric energy so as to drive the air compressor to work; and the compressed air is released into the water body through the aeration disc so as to be further diffused through the guide cylinder. The aerator adopts the solar cell for power supply so as to effectively realize the high efficiency oxygenation through stream-making aeration without secondary pollution, effectively prevent the breakout of alga in the polluted water body, and realize the function of water body restoration and self purification. In addition, as the aerator is a buoy type structure floating on the water surface, the aerator does not occupy floor space. The aerator has compact structure, small size, and easy transportation and installation.