To seek a technically feasible，economical，and environmentally compliant dewatering treatment scheme for dredged sediment of lakes and reservoirs，this study takes the dredged sediment of Lake Baiyangdian as the research object for the experiment on electroosmotic vacuum preloading technology by systematic engineering research methods of model tests，pilot tests，and application demonstration. The results reveal that the electroosmotic vacuum preloading technology is mature and extraordinarily outperforms vacuum preloading in dewatering，and the dewatering effect of double-sided drainage is significantly better than that of single-sided drainage. In addition，the cost of electroosmotic vacuum preloading technology is about 1/3 higher than that of vacuum preloading technology. The technology meets the requirements of ecological compliance and can be used for subsequent resource utilization. The research results can provide a technical basis for engineering design and construction.