Abstract: In order to better evaluate Changzhou City inland governance after the ecological environment, from us in August 2012 to December for three times in new north district, Changzhou City, Jiangsu Province along the north drainage Mitsui River, Chai River, North River Basin, the city Tongji River Port, bath for the common community survey. Surveys were caught 331 fish tail, 3523.55 g, 3 families, 11 genera and 12 species belonging to 3 orders. Item of carp, carp shape (meal), bayes (meal) as the dominant species (IRI 1000 or higher), like Bian, grain, snakehead, etc for common (IRI 100 or higher), and gills in eel as rare species (IRI 100) or less. Margalef abundance index in 4 # was easy to buy the highest reached 1.924, and the 1 # pond northbridge, 7 # frequently Toyohashi was higher, with 11 # Tongji Hexi as minimum; Shannon Wiener diversity index to 7 # frequently Toyohashi highest, reaches 1.431, and 10 # Mitsui River crossing, the 1 # pond chipset for higher, lowest in 13 # Tongji Hedong; Pielou's Evenness Index, Evenness Index in 3 # Mitsui Bridge, the highest reached 0.978, and 10 # Mitsui River crossing, the 1 # pond chipset for higher, lowest in 13 # Tongji Hedong; Diversity index and Evenness index and Permanganate index, BOD5, petroleum, total nitrogen, ammonia nitrogen were significantly negative correlation between environmental factors such as, diversity index and luminescent bacteria acute toxicity and the richness index was significantly positively related to relationship. Fish species survey results for Changzhou canal protection and utilization of resources to provide the reference, and also provide strong evidence for ecological environment repair progress.