In order to solve the problem of dredged fill including high moisture content，large compressibility and long consolidation time，etc，this paper puts forward an economic and feasible method，i.e.using composite curing agent to cure the dredged soil，so as to achieve the aim of saving time and cost.Three kinds of curing agents with better effect are developed by means of single-mixed and orthogonal experiments，and impermeability and shear tests，etc.The test results show that the effect of category 3 mixed with 2% sodium silicate，3% gypsum and 2% NaOH is the best，but considering raw material costs，the cost performance ratio of category 2 which is only mixed 0.04% triethanolamine is the highest.