The invention aims to provide a double-swirl dual-fuel nozzle used for a chemical regenerative cycle. The double-swirl dual-fuel nozzle comprises an auxiliary oil-path channel wall, a main oil-path channel wall, a first-level gas-path inner wall, a second-level gas-path inner wall and a gas-path outer wall, wherein the auxiliary oil-path channel wall, the main oil-path channel wall, the first-level gas-path inner wall, the second-level gas-path inner wall and the gas-path outer wall are arranged from inside to outside. An auxiliary oil-path channel is formed inside the auxiliary oil-path channel wall, and an auxiliary oil-path swirler is arranged at the end of the auxiliary oil-path channel wall and communicated with an oil-path spout. A main oil-path channel is formed between the auxiliary oil-path channel wall and the main oil-path channel wall and communicated with the oil-path spout. A first-level gas-path channel is formed between the first-level gas-path inner wall and the second-level gas-path inner wall, a second-level gas-path channel is formed between the second-level gas-path inner wall and the gas-path outer wall, the end, located on one side of the oil-path spout, of the first-level gas-path channel is provided with first-level swirl vanes, and the end, located on one side of the oil-path spout, of the second-level gas-path channel is provided with second-level swirl vanes. According to the double-swirl dual-fuel nozzle, the swirl vanes are adopted, the two levels of the swirl vanes have the opposite rotation angles, and mixing of gas fuel and air is enhanced.