Abstract:The production of dredged sludges in rivers and lakes is huge, and the composition is complex. The economical and efficient resource utilization technology for dredged sludges is of great significance in promoting its resource utilization, but there is still a lack of related technologies at present. Combined with previous research and engineering experiments, the sludge resource technologies are divided into four types, and the main progress and application status of different types to utilize dredged sludges are systematically sorted out. At present, The type of curing treatment is lack of a universal curing agent formula and curing agent information database, curing effect is limited, and lack of practical application reference value. The utilization efficiency of building materials type is not high, which limits the amount of dredged sludges treated, and then new technologies need to be explored for optimization. Land use type has the advantage of treating a large amount of dredged sludge, but the current requirements for auxiliary media materials are high, and the stable control of pollutants, such as heavy metals, cannot be guaranteed. Although compost treatment type reduces the requirements for auxiliary media, it also has the problems of secondary pollution, as well as the occupation of time and space. Finally, the existing technologies are further summarized to reflect the development of dredged sludge resourcing technologies from two perspectives. From the perspective of engineering utilization, the chemical methods of curing treatment can be organically combined with the physical methods of building material utilization, and the introduction of engineering technology to treat sludges, and may be the main development direction of engineering utilization in the future. From the perspective of natural utilization, the material transformation mechanism of land use and compost treatment should be explored in a unified manner, so as to lay a foundation for effective resource utilization and pollutant control strategies. In general, future research needs to make efforts in two directions: optimizing the amount of dredged sludge treated by existing technologies and exploring new resource routes, so as to treat dredged sludges more efficiently and economically.