The integrated monitoring system for dredging and disposal of the polluted sediments from urban river is developed applying advanced PLC technology and configuration software. The system can monitor and remote control equipment running status of each sub unit in the whole process, and also give alarm information, record the relevant data of the process, provide real-time curve and historical data browsing, and be formed in accordance with the requirements of reports and project the amount of statistics. The system is put into use in an environmental dredging and characterized by stable operation and perfect management functions.