NOVELTY - Rural dispersive sewage is treated by collecting dispersion sewage, leading sewage into pre-treatment tank, removing suspended substance and floats, and adjusting biological oxygen demand (BOD5) at 110-160 mg/L, chemical oxygen demand (COD) at 120-150 mg/L and suspended solids (SS) at 90-130 mg/L; constructing high load earthworm biofilter, uniformly inoculating 15000-28000 Eisenia foetidas; and clarifying sewage by sedimentation tank, and draining water from overflow outflow tube having BOD5 of less than 15 mg/L, COD of less than 60 mg/L and SS of less than 15 mg/L.    USE - Method for treating rural dispersive sewage for high load earthworm biofilter in water and irrigating upland crops and vegetables (claimed).    ADVANTAGE - The method has heavy hydraulic load, small occupying area, no blocking, simple flow and operation, good quality of yielding water, low engineering cost and operation cost, and suitable for treating village sewage.    DETAILED DESCRIPTION - Treatment of rural dispersive sewage comprises (1) collecting dispersion sewage, leading sewage into pre-treatment tank, removing suspended substance and floats by grizzly screen set at water inlet of pre-treatment tank, using fiber cluster filling material provided in pre-treatment tank to primarily degrade organic contamination in sewage, and adjusting biological oxygen demand (BOD5) at 110-160 mg/L, chemical oxygen demand (COD) at 120-150 mg/L and suspended solids (SS) at 90-130 mg/L; (2) constructing high load earthworm biofilter of a cylindrical structure having inlet tube, rotating distributor, first earthworm filtering layer, spacing layer, second earthworm biofiltering layer, spacing layer and sedimentation tank, filling light shale ball shaped porcelain granules with diameter of 3-7 mm and grain density of 1.56x 103 kg/m3, as filtering material, above filter screen, uniformly inoculating 15000-28000 Eisenia foetidas in square meter of filtering material, every earthworm of 0.3 g; (3) uniformly spraying discharged water treated by pre-treatment, controlling hydraulic load of water inflow of high load earthworm biofiltering tank at 4-6 m3/(m2.d), when sewage flows through filtering material of the earthworm biofiltering layer, colloidal and dissolved organic matters in water are digested and degraded by biomembrane at the surface of the filtering material; (4) absorbing aged biomembrane as nutrient source by earthworm, decomposing, purifying sewage under synergic action of earthworm and microorganism, reducing sewage, and stabilizing; (5) clarifying sewage by sedimentation tank under spacing layer and second earthworm bio-filtering layer, and draining water from overflow outflow tube having BOD5 of less than 15 mg/L, COD of less than 60 mg/L and SS of less than 15 mg/L, in accord with National farmland irrigation water quality standard GB5084-2005.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of the treatment of rural dispersive sewage. (Drawing includes non-English language text).