The invention discloses a self-power-generation intelligent water-body oxygen enrichment device, which comprises an integrated floating block and a metal stable support positioned on the integrated floating block. A main-body anti-rust sealed shell is arranged on the metal stable support. An environment-friendly low-energy-consumption water pump, an environment-friendly high-efficiency lithium battery, a safe low-voltage electricity storage system and a steam-water mixing device are arranged inside the main-body anti-rust sealed shell. A photovoltaic power generation device is fixed on the metal stable support. A wind power generation device is respectively arranged at two sides of the main-body anti-rust sealed shell on the metal stable support. In comparison with the prior art, clean energy including luminous energy and wind energy can be spontaneously generated by the utilization of a wind power generation device and a photovoltaic power generation device. The operation is quiet, and shipment is convenient. In addition, unmanned stable operation can be truly realized. Superfine atmosphere particulates which are generated by the whole equipment and diffused from the water bottom are helpful for normal growth of aquatic life around the facilities and at the downstream.