The invention discloses a technology for manufacturing a high-strength natural gas storage tank. The technology comprises the following steps: production and splicing of an inner layer tank body and an end socket, production of an intermediate layer, and production of an outer layer tank body and a tank mouth hole fitting. The gas storage tank is produced through producing the inner cylindrical shell (inner tank body) and the end socket, splicing the inner cylindrical shell, producing the intermediate layer, producing reinforcements and producing the outer layer tank body. A tank wall made ofglass fiber reinforced plastic has a double-layer structure, and a glass fiber material is arranged in the middle of the double-layer structure. A male mold spraying process is adopted to make the inner tank body and the outer tank body closely compacted, so the compressive strength is improved, and the elastic modulus and the mechanical strength of the glass fiber reinforced plastic storage tankare greatly improved; and the preparation technology is not limited by molds, and allows the larger-diameter glass fiber reinforced plastic storage tank to be produced. The reinforcements are arrangedin the shell and the inner liner surface of the gas storage tank, so the strength and the rigidity of the gas storage tank are ensured, the wall thickness and the weight of the gas storage tank are reduced, and the gas storage capacity of the tank body is increased. The high-strength natural gas storage tank has the advantages of good corrosion resistance, long service life, high strength, and safety and reliability in use.