The invention belongs to the technical field of water purification equipment, and particularly relates to a solar power pool water purification oxygenation device and a water purification oxygenation method. The device comprises a floating boat body, a flow making purification device and a negative oxygen ion generating device, wherein the flow making purification device comprises a garbage conveying collection assembly, an ultraviolet disinfection box and a spraying aeration box; the pool water firstly passes through the garbage conveying collection assembly to collect large solid garbage on the water surface; then, the water is subjected to ultraviolet disinfection, negative oxygen ion disinfection and spraying aeration; the local water purification and oxygenation can be realized; cleanness, environment protection, energy saving and high efficiency are realized.