As the demand for privacy protection grows, TEE technology has once again become a focal point. TEE provides a secure execution environment independent of the main system, protecting sensitive data and code. Multiple blockchain projects, such as Flashbots, Taiko, and Scroll, are exploring TEE applications to achieve private transactions, decentralized block building, and multi-proof systems. While TEE offers advantages in security and privacy, it still faces centralization risks. In the future, it may need to be compatible with more hardware vendors and set node ratios to reduce reliance on a single supplier, thereby further enhancing decentralization.