In this paper, the research object is marine soft soil in Linhai Park of Qinzhou Port and Qisha Park of Fangchenggang Port. The marine soft soil environment factors, additional load stress of coastal reclamation layer and pore water ionic concentration changes of chemical composition, were simulated by using a soil soaking-load linkage which is mechanism simulation device. And the artificial soil samples were acquired successfully. The permeability and void ratio of the artificial soft soil samples were tested. Impact on the permeability of artificial soft soil samples was analyzed for additional load stress of coastal reclamation layer and pore water ionic concentration changes of chemical composition. Studies have shown that the following.The e~lgk curve of artificial soft soil samples is approximation linear relationship.The void ratio and permeability coefficient of artificial soft soil samples change along with the additional load stress of coastal reclamation layer and pore water ionic concentration changes of chemical composition. There is a mutual coupling effect for void ratio and permeability coefficient of artificial soft soil samples between additional load stress of coastal reclamation layer and pore water chemical composition.