The invention provides a technical method for eliminating a sand storm disaster by building a desert sea and a multifunctional great wall. The current plant or engineering desertification control method can not effectively prevent and control the sand storm disaster. In the technical method provided by the invention, a sea-like water storage body which can reach or exceed the whole desert or gravel desert geographic range is built, a film laminated at the bottom of the sea and sea water on the film are used for keeping sand and gravel deposits down; and the multifunctional great wall is built in groups, thus dust matters can be effectively blocked and buried, and a great wall land which is wide in range and can be used by people for carrying out production and daily activities can be developed. In the invention, desalinized water of the desertification sea is used for solving the problem of water source, a building wind tunnel type wind driven generator and the like are used for solving the problem of energy source, and a desert road net and an earthquake-resistant house are used for providing excellent and safe traffic and housing conditions, thus desires of people for carrying out desertification and eliminating the sand storm can be realized. By applying the technical method provided by the invention, a desert can be changed into an enterprising base of the industries such as wind power generation, solar power generation and the like, and the desert can be changed into a resettlement base for emigrants moved for a project and the emigrants in a high geological disaster region.