Abstract: Electricity trading is an important part of the electricity market and the core of the electricity market operation. Up to now, the construction of China's power market is still in its infancy, the provincial trading centers have not been established for a long time, and the trading mechanism has not been fully established. Brazil, as one of the BRICS countries, has a high degree of similarity to the development of China. There are also many similarities in the development trajectory of the power industry. The rapid establishment and efficient operation of the electricity market are of great reference to the current construction of the electricity market in China. This article studies the power market trading mechanism in Brazil for many years from the aspects of regulators, participants, market mechanisms, types of trading markets, and supporting measures, summarizes its operating experience, analyzes the similarities and differences between the Brazilian power market trading mechanism and China's power market transactions, and in the adaptability of China, the empirical enlightenment beneficial to the construction of China's electricity market is finally proposed.

Key words: electricity trading, electricity market, transaction settlement, power system reform