Ethereum faces transaction congestion and high Gas fee issues. ZK Rollup, with its off-chain processing and zero-knowledge proof technology, has become the optimal solution. Multiple projects such as Manta Network, Linea, Starknet, and others showcase their respective advantages, promoting the development of the ZK ecosystem. Future trends include performance breakthroughs, application innovation, and differentiated competition, while also facing technical challenges and cross-chain risks.