NOVELTY - Method for processing aquaculture wastewater of a pig farm, involves removing solid substances e.g. pig manure, pumping the wastewater into a floatation tank, removing suspended matters, enabling the wastewater to flow into a regulating reservoir and enter into an anaerobic reactor, refluxing sludge in anaerobic generation to a sludge drying bed, composting with the pig manure from solid-liquid separation, pumping the wastewater pump processed by the anaerobic reactor into the aeration tank, mixing with active sludge, and discharging to an ecological oxidation pond.    USE - The method is useful for processing aquaculture wastewater of pig farm (claimed).    ADVANTAGE - The method is simple in process, small in floor area, strong in processing capacity, simple to operate, and less in processed residual sludge and reduces the capital expenditure.    DETAILED DESCRIPTION - Method for processing aquaculture wastewater of a pig farm, involves removing solid substances such as pig manure by a thick grating, a fine grating and a muddy water separator, then pumping the waste water into a floatation tank, exposing the floatation tank by a spherical aeration valve to remove suspended matters, enabling the waste water to flow into a regulating reservoir from the floatation tank, adjusting the pH of the wastewater to 7-8 and entering into an anaerobic reactor via a lift pump in a lifting manner, where the pollutant in the wastewater to obtain gradually and to obtain stable to degradation under different microbial population, refluxing sludge in anaerobic generation to a sludge drying bed, composting together with the pig manure from solid-liquid separation after naturally drying, pumping the wastewater pump processed by the anaerobic reactor into the aeration tank, mixing with active sludge inside the tank with oxygen, decomposing by microbial metabolism and utilization and discharging the processed wastewater to an ecological oxidation pond connected in series of 3-5, and planting floating plant Eichhornia crassipes.