Oily sludge has the physical properties of high moisture content,high viscosity,and semi-fluidization,making it a typical wet viscous material.At present,mainstream oily sludge disposal and utilization technologies have the drawbacks of high residual petroleum hydrocarbons,high energy consumption,and high carbon emissions.In the new context of vigorously promoting the implementation of the"Dual Carbon"goal in China,it is urgent to develop a new low-carbon disposal technology for oily sludge.This article systematically analyzes the advantages,feasibility,and application scenarios of smoldering method for disposing oily sludge,and summarizes the technical problems that need to be solved and future research work that needs to be carried out in depth,in order to provide valuable reference for relevant scientific and technical personnel.