Abstract: Abstract：In view of the situation that the directly discharge of rural domestic wastewater has seriously affected the quality of the rural water environment in China, the treatment technologies and facilities of rural domestic wastewater at home and abroad were introduced. Starting thinking with the village or habitat as a rural unit to do domestic wastewater treatment, the principles, characteristics and application status of rural domestic wastewater treatment technologies in economically developed areas and the major basins in China were introduced, and then the design principles for rural domestic wastewater treatment technology in China were put forward.