This comprehensive guide explores stablecoins, cryptocurrencies designed to maintain predetermined values by pegging to fiat currencies, commodities, or other cryptocurrencies. Stablecoins solve the volatility problem in digital asset trading, making them ideal for payments, remittances, and cross-border transactions. The article examines four main types: fiat-backed (USDT, USDC), commodity-backed, crypto-backed (DAI), and algorithmic stablecoins, each with distinct characteristics. It profiles leading stablecoins like Tether, USD Coin, and MakerDAO's DAI, highlighting their market positions and regulatory challenges. The guide compares stablecoins with Bitcoin, analyzes safety considerations and reserve management risks, and discusses their crucial role in decentralized finance. As regulatory frameworks evolve globally, stablecoins are positioned to become essential bridges between traditional finance and blockchain ecosystems, facilitating mainstream adoption through Gate and other platforms.