Jiangyin City, Jiangsu Province, the water sector commitment to "SJS series of pneumatic pump development and transformation" project recently passed the acceptance of the Ministry of Water Resources, to fill the gap in China's deep-water dredging technology. In mid-May, the inspection and acceptance expert team visited the construction site of SJS180 type pneumatic pump in Chongqing Wanzhou Three Gorges Reservoir Area. It was agreed that the project was of great socio-economic significance and had a broad prospect of popularization and application. Compared with similar foreign products, the biggest feature of SJS series pneumatic pump is environmental protection, which does not produce secondary pollution when dredging; can clear the sludge with water depth of 60-80 meters, the theoretical dredging depth can reach 200 meters, reaching the international similar products Advanced level. The development and transformation of the project will greatly enhance the technical level of deepwater dredging and environmental dredging construction in China. "SJS Pneumatic Pump Series Development and Transformation" project was listed as the state to introduce advanced international agricultural science and technology projects and the transformation of national agricultural science and technology project funds. In October 1997, the municipal department of water conservancy introduced deep-water dredging equipment from Italy. The equipment dredged 40 cubic meters per hour and the dredging depth was not enough to carry out large-scale deepwater dredging. After several years of digestion, absorption and innovation, the Jiangyin Water Conservancy Department successfully developed the SJS80, 180 and 600 series of pneumatic pumps, of which the 180-type pneumatic pump can dredging 180 cubic meters per hour and the 600-type pneumatic pump achieves 600 cubic meters. At present, SJS series of pneumatic pumps have formed independent intellectual property rights and obtained 4 national patents such as dredging pumps and air distributors. 180 type pneumatic pumps in Dalian, Hainan, Shanghai, Nanjing, Chongqing and other places into the actual production test, the better completion of the technical indicators.