During the construction of dredging and hydraulic reclamation,how to reduce the water content of reclaimed soil rapidly is the key point when dealing with the soft foundation in reclaimed area.In order to further improve the drainage efficiency,the study on pulsating vacuum preloading drainage technology was carried out based on the silt rheology theory.By conducting a large number of small-scale single plate water draining model tests inside the room,this paper analyzed the drainage effect with the pulsating vacuum preloading method,and proposed a new method for soft foundation treatment.Experimental results show that this method is superior to the present vacuum preloading drainage method which is commonly used,and it improves the drainage efficiency and reduces the silting and blocking problems in drainage channel.