Abstract: China is comprehensively carrying out the construction of the electricity spot market, and the spot pilot areas have built relatively complete spot market operation support systems based on current market rules and the current status of the power system, supporting the effective operation of the current electricity spot market. With the gradual increase of the proportion of renewable energy in the construction of new power systems and the implementation of the “carbon emission peak and carbon neutrality” national strategy, the existing operation technology support system will not be able to meet the needs of future market development. On the basis of summarizing the technical practice of electricity spot market in China, the changes in the characteristics of the electricity spot market and the technical challenges it faces are analyzed, and the key technologies in the future are discussed in the aspects of multi-agent modeling and access, market clearing algorithm, market risk analysis, trusted trading environment, market simulation, etc. Some technologies have been preliminarily applied.