Abstract: Developing a low-carbon economy and promoting the green low-carbon transition of the whole society is an inevitable choice for our country to achieve sustainable development as a large carbon-emitting country. As an important area of green and low-carbon transformation of the whole society, the energy and power industry is the key to achieve emission peak and carbon neutrality in our country. As an important regulatory mechanism and key link for carbon emission reduction, carbon monitoring is related to the fair, credible and healthy development of the carbon market. How to achieve the goals of real-time reliable collection and summary , reliable and secure transmission, collaborative sharing of carbon monitoring data in the energy and power sector has become a difficult point in the implementation of carbon monitoring in the power industry. Combined with distributed oracle on-chain mechanism, this paper uses the blockchain technology to distribute the collaborative trust mechanism, designs a carbon monitoring application service system suitable for the power field, which can meet the requirements of decentralization, non-tampering, traceability, openness and transparency in the carbon monitoring process. The mechanism provides a wide range of carbon monitoring and trust systems for the power industry. It can support services such as carbon footprint tracking, carbon verification, emission certification, and carbon reduction, which can promote the green and low-carbon transformation of the entire power industry chain.