This article explores the economic principles of meme coins, analyzing the mechanism of meme propagation and its application in the cryptocurrency sector. Meme coins combine popular culture and internet trends, gaining attention through viral spread and community support. The article highlights the high volatility, emotion dependency, and market manipulation risks of meme coins, and discusses their integration with NFTs and DeFi. Although meme coins offer innovative ways to participate and potential high returns, investors are advised to carefully assess the risks.