NOVELTY - Livestock and poultry wastewater treatment, by adding auxiliary agent in livestock and poultry wastewater injection-adjusting pool, stirring and ultrasonically processing, adjusting pool wastewater through grid thick sieve separation, processing, performing primary separation, adjusting wastewater injection separating pool, aerobically processing, obtaining first stage processed product, performing secondary separation, processing and obtaining second stage processed product and filtering processed wastewater to obtain third stage processed product.    USE - The method is useful for livestock and poultry wastewater treatment. The obtained first, second and/or third stage separation products are useful as fertilizer for soil, and as raw material for (a) preparation of solid organic fertilizer, agricultural additive or soil improvement agent, (b) forming, roasting or sintering block/brick, (c) granulating and heating porcelain, and (d) high temperature activation treatment and absorption of activated carbon (all claimed).    ADVANTAGE - The method is simple and harmless. The method has high efficiency, adopts solid-liquid separation, organic substance separation and processing system, and can effectively reduce organic material in livestock wastewater, thus it solves problems regarding livestock wastewater environmental pollution and nutrient content, and the water quality after processing reaches discharge standard. The adsorbent can be recycled.    DETAILED DESCRIPTION - Livestock and poultry wastewater treatment, involves (a) in livestock and poultry wastewater injection-adjusting pool, adding auxiliary agent (0.01-3 wt.%) for aeration, stirring and ultrasonically processing using ultrasonic wave at ultrasonic frequency of 20-100 kHZ and ultrasonic wave intensity of 0.1-70 W/cm2 for 0.1-60 minutes, where the auxiliary agent is deodorant, microorganism regulator or their mixture, (b) processing after adjusting pool wastewater through grid thick sieve separation, performing a primary separation to remove large particles, adjusting pool wastewater injection separating pool which contains auxiliary agent for aeration, stirring for aerobic processing and obtaining first stage processed product, (c) performing secondary separation using separating pool-wastewater injection separating device, processing and separating to obtain second stage processed product, and (d) filtering processed wastewater and obtaining adsorbent that can be recycled or can discharge the standard water, and third stage processed product simultaneously.