[Objective] The effect of baffled surface flow wetlands on water purification was studied in order to provide a reference for the ecological restoration of polluted river. [Method] Contents of some indexes like DO,TN,TP,NH+4-N,CODCr,SS,SD,etc. were determined in the band baffled surface flow wetlands with total area of 7 400 m2 at JiaLu riverside. [Result] Baffled surface flow wetlands could improve the effluent quality significantly,could enhance transparency and dissolved oxygen content and also could dec...