Abstract: The use of "'three clearance'+plant ecological restoration+pipeline decontamination" project management Changzhou a town area Black Stinky bang （5 rivers Bang）. Clean up the silt, garbage and weeds in the river through the'three removal 'process. The artificial cofferdam stores and dries the silt, and uses the silt for crop planting, which realizes the reuse of N and P nutrients in the silt. The ecological slope protection system constructed by the use of wet-resistant tree species can intercept and reduce pollutants. A three-dimensional plant ecological restoration model was constructed by using the plants, floating plants and submerged plants to absorb N, P and other pollutants in the river. After 1 years of operation, the test results show that 5 rivers eliminate the phenomenon of black odor, water transparency is high, COD, ammonia nitrogen, TP, permanganate index, dissolved oxygen, transparency and other water quality indicators have reached the surface water environmental quality standards（GB3838-2002） in the Ⅳ category standards. This method is a good method suitable for the treatment of black smelly river in the villages and towns of southern Jiangsu, and realizes the ecological restoration and ecological natural succession of the water environment of the vein river, which has the function of engineering demonstration and the value of application and popularization.

Key words: black stinky creek, dredging, plant ecological restoration, pipeline decontamination