NOVELTY - Environmentally friendly purification of domestic sewage comprises e.g. temporarily storing the domestic sewage in water collection pool, using crude screen for collecting large volume of slag, using sewage pump to lift sewage, using thin screen to collect less volume of dregs, discharging water collection pool sewage into the oil insulating pool, removing wastewater oil, discharging wastewater into sand-depositing pool, separating inorganic granule in the sewage, homogenizing, entering into anoxic tank, using anoxic microorganisms to degrade organic polymer contaminants in wastewater.    USE - The method is useful for environmentally friendly purification of domestic sewage (claimed).    ADVANTAGE - The method is suitable for domestic sewage purification, can reduce the use of chemical substance to prevent the secondary pollution, thus it is environmentally friendly.    DETAILED DESCRIPTION - Environmentally friendly purification of domestic sewage comprises temporarily storing the domestic sewage in water collection pool, using crude screen for collecting large volume of slag, then using sewage pump to lift sewage to a height, then using thin screen to collect less volume of dregs, discharging water collection pool sewage into the oil insulating pool, removing wastewater oil in sewage using flotation method, then discharging wastewater into sand-depositing pool, separating inorganic granule in the sewage, discharging wastewater from sand-depositing pool and entering adjusting pool, homogenizing water quality, entering into anoxic tank through wastewater lift pump, using anoxic microorganisms to degrade organic polymer contaminants in wastewater and decomposing into low molecular weight organic pollutants, discharging sewage into the biochemical pool, using biological film method for sewage treatment process, constructing water inlet area of artificial wetland treatment area, paving inner water anti-seepage film, paving with thickness of 20-25 cm in a area of bottom layer, where the grain size of crude gravel layer is 40-60 mm, laying thick layer of crude gravel of 30-35 cm, where the grain diameter is 20-40 mm, laying 15-20 cm broken stone layer, where the fine broken stone layer size is 10-30 mm, laying 10-12 cm fine gravel layer which is a soil layer, connecting third processing area planting reeds, where the planting density is 15-20 plants/m2, in the other two-thirds of the region, planting bamboo, where the planting density is 12-15 plants/m2, discharging sewage from the biochemical pool via the water inlet into the artificial wetland area, regulating the inlet zone water backward into the treatment area, where the processing area water depth is 45-55 cm, when the water in the wetlands meet emissions standards, discharging through the outlet area.