Gas storeroom structure of underground cave

The invention discloses a gas storeroom structure of an underground cave. The gas storeroom structure comprises a gas storage cavity arranged in underground rock mass, wherein the outer wall of the gas storage cavity comprises a lining concrete layer and a glass fiber reinforced plastic sealing layer from outside to inside; the glass fiber reinforced plastic sealing layer is formed by superposinga plurality of glass fiber reinforced plastic sub layers; and a gastight layer is arranged between the lining concrete layer and the glass fiber reinforced plastic sub layer at the outermost layer, and a gastight layer is arranged between adjacent two glass fiber reinforced plastic sub layers. A gastight layer is arranged on a contact surface of the sealing layer and the concrete layer and a gastight layer is arranged inside the glass fiber reinforced plastic sealing layer, so that sealing property can be greatly improved; and the thickness of the glass fiber reinforced plastic sealing layer can be reduced to be lower