Disclosed in the present invention were a fluorosulfonyl-containing compound, an intermediate thereof, a preparation method therefor and use thereof. The fluorosulfonyl-containing compound disclosed in the present invention comprises a cation and an anion, the cation being as shown in Formula (1). The fluorosulfonyl-containing compound of the present invention can react with a substrate to efficiently synthesize a fluorosulfonylation product, has low toxicity, was simple to prepare, was convenient to use, and was in a solid stable state at normal temperature. Furthermore, the compound has a wide range of adaptable substrates, including phenolic compounds and amine compounds, and was the only solid form agent that can achieve such a chemical conversion, and therefore has important academic and application value.