A concept Aerated Vertical-Flow Wetland is introduced in the text, experimental researches through a pillared unit werecarried out on the performances of treating domestic wastewater in the rural area of Lake Dianchi valley, Yunnan province. Theoxygen transfer efficiency of the experiment device reached 14.04%. And the experiment data showed that, with hydraulic loading as15.29 m³/(m²·d) and airflow-waterflow ratio 1:2, average BOD5 and NH4-N removal respectively reaches 74.4% and 63.5%. The BOD5 and NH₄-N values within outflow get to 4.96mg/L and 2.72mg/L. It resulted that, the Aerated Vertical-Flow Wetland Technicswas effective and economical for suburb domestic wastewater treatment with high hydraulic loading.