Abstract: China's data center industry is expanding rapidly, with power consumption and indirect greenhouse gas emissions surging. To achieve "carbon peak and carbon neutrality" targets, data centers could be covered by China's national carbon emissions trading system to incentivize its energy efficiency improvement and green electricity use. Based on the operation mechanism of China's national carbon emission trading system and key features of data center operation, this paper proposes mechanisms to incorporate data centers into China's national emission trading system, including the allocation method of emissions quota, emission accounting approaches, data quality control and green power trading. Thresholds and corresponding boundaries for data center coverage are also proposed.