Abstract:In order to break the application limitations of the existing blockchain-based regulatory platforms, based on the concept of "green audit", under the principles of safety, reliability, and standardization, this paper built an audit supervision cloud platform based on the underlying technology of Huawei Cloud blockchain. It included architectures with cross-layer functions, such as infrastructure layer, smart contract layer, platform application layer, and government regulatory layer, designed a decentralized network system through the application of P2P network technology, distributed ledger, more open license chain structure, cryptographic algorithm technology, as well as proposed cloud platform construction path by the four core technology of timestamp, cryptography, consensus mechanism and smart contract. It was hopeful to promote the reform of China's audit industry and provide a reference for the construction of regulatory science and technology basic capacity.