Abstract: The present invention provides an ecological biotope water purification system utilizing multi-cells and multi-lanes by considering the width, length, curvature and slope of proposed composition site wetland and pond. The system comprising: a sedimentation pond (200, 200?) for temporarily storing wastewater incoming from an Inlet (100,100?); a marsh (300, 300?) incoming the primarily treated water, being precipitated solid contaminants, and discharged from the sedimentation pond (200, 200?), and at least one Multi-level cell composed an open water-surface pond (400, 400?) entering the primarily treated water from the marsh; a settling reservoir (600, 600?) outflow finally purified water by multi-level cell inflow for temporarily storing through outlet (700, 700?), the multi-level cell consists at least of two multi-lanes (40, 40?, 40?), each lane is separated by small dikes (900, 900?).