Abstract: In response to the failure to consider multi-layer access of data between multiple participants in the process of blockchain-based power market trading, which makes it impossible to identify security risks due to internal attackers from authorized institutions, a power transaction data security verification model based on trust and blockchain is proposed, which strengthens user trust management concerning satisfaction, similarity,and evaluation credibility, etc. The Zero-knowledge proof verification method based on hash encryption is used to avoid the abnormal access of internal blocks, ensure the security of the power transaction monitoring system, and improve the power data security management level.