The reasonable elevation of wave walls and land formation is a key technical issue for successfully implementing LNG project，and its determination directly affects the protection effect and engineering quantity of the rear gas storage tank areas of LNG terminal and then the project investment and decision. With the Yangjiang LNG terminal project as an example，the project adopts a revetment zoning design with direct and indirect cover tank areas，which effectively reduces the engineering quantity in protection. Under the premise of moisture-proof and wave-proof requirements for LNG gas storage tank areas，this paper proposes an elevation linkage optimization design method for wave walls and the land formation，and the method is the most cost-effective and considers the landscape corridor. This paper carries out four groups of physical model tests of flume sections with different elevations under regular waves to verify the rationality of the elevation optimization design. The control tests of wave overtopping rates of wave walls with different structures show that the wave overtopping rate of a curved wall is smaller than that of a vertical wave wall，and thus the curved wall can be regarded as the optimal structure.