The utility model relates to a sandstone acoustic board for a transformer substation. The sandstone acoustic board for the transformer substation is boned to be an integrated body through natural clean sands and inorganic silicon solvent which plays bonding role, wherein irregular tiny holes which are communicated with each other are arranged in the integrated body which is formed through the natural clean sands and the inorganic silicon solvent. The sandstone acoustic board for the transformer substation is high in acoustic factors below low frequency 500Hz, and is particularly suitable for the fields of transformer substations. Simultaneously, the sandstone acoustic board for the transformer substation is more environmentally friendly, and does not have the pollution problems of fiber-shaped dust. The sandstone acoustic board for the transformer substation is also excellent in waterproof and fireproof effects.