Centralized exchanges (CEX) and decentralized exchanges (DEX) each have their advantages and disadvantages: CEX offers high liquidity, easy operation, and supports fiat trading, but carries risks of asset custody and regulation; DEX allows users to control their private keys, does not require KYC, and can trade innovative projects, but has lower liquidity and higher operational barriers. When choosing, one must weigh safety, liquidity, and compliance needs—large transactions or beginners are more suited to CEX, while privacy needs or long-tail tokens lean towards DEX. It is recommended for DEX beginners to start with small amounts, strictly verify contract addresses, and use aggregators to optimize trading, while prioritizing mastering wallet and gas fee settings. For most users, CEX is more suitable for daily trading, while DEX can serve as a supplementary tool; the key is to choose flexibly based on actual needs and safety awareness.