YouSwap, which realizes multi-chain sharing of digital assets by constructing a multi-chain ecological deployment system. It improves AMM model (Automated Market Maker Algorithm) and provides liquidity effect with high security by accessing Chainlink Oracle Protocol. YouSwap provides technical services as four-chain cross-chain aggregation transaction function to integrate cross-chain liquidity in finding the best transaction path for users, derivative services in risk hedging, and so on. Meanwhile, these technical services can be applied on Ethereum net Layer 2. Compared with decentralized exchanges in other chains, YouSwap has many advantages, such as wide investment range, low slippage, reduced exposure to impermanent losses, high scalability, real-time trading, low gas fee and so on. In the later period, YouSwap will continue to strengthen R&D investment, explore the real decentralized cross-chain technology, realize the intelligent scene of integration of multiple public chains, and create the seamless exchange and interoperability application of multi-chain primitive assets.