Recently, I've noticed more and more people around me discussing DeFi tokens, and it feels like this sector is really heating up. Rather than calling it a trend, it's more accurate to say it's one of the most practically valuable tracks in the entire crypto market. Today, I want to organize my understanding of DeFi.

What is DeFi? Simply put, it’s decentralized finance, allowing users to interact directly through smart contracts without the need for intermediary institutions like banks or exchanges. DeFi applications started appearing on Ethereum in 2017, but it wasn’t until 2021 that it truly exploded. That year, DeFi token projects flooded the market, and now there are roughly over 2,500 DeFi-related tokens.

The main reason DeFi is attractive is because it solves pain points of traditional centralized finance. No KYC, full control over assets, high transparency, and global accessibility—these features are very appealing to many people. In contrast, traditional financial platforms require you to give up control of your assets and go through complex verification processes.

From an application perspective, DeFi tokens mainly fall into several categories. The most well-known in trading is Uniswap (UNI), which is the leader in decentralized exchanges. There are about 380 DEX platforms on the market, but UNI is indeed the most recognized. Then there are lending platforms like Compound and Aave, which allow users to lend and borrow crypto assets directly. In derivatives, there are Synthetix and dYdX, offering futures and synthetic asset trading. Also, there’s ChainLink, an oracle that’s often overlooked but provides data support for the entire DeFi ecosystem.

I personally see good investment value in DeFi tokens mainly because these projects have actual revenue streams. User trading, lending, and liquidity provision generate fees, which are directly or indirectly distributed to token holders. This is different from some vaporware projects; DeFi tokens are backed by real use cases and cash flow.

According to the latest statistics, the total value locked (TVL) in the DeFi ecosystem is about $119 billion, accounting for roughly over 9% of the entire crypto market. It has been steadily growing since 2020, exploded in 2021, reaching a peak of around $180 billion in 2022, then pulling back but remaining relatively stable. This development trajectory shows that DeFi has moved from an early stage to a relatively mature phase.

However, investing in DeFi tokens also involves risks. Smart contracts may have vulnerabilities or be hacked, and scam projects are common, all of which can lead to asset losses. Crypto assets are highly volatile, and lending involves liquidation risks. The most often overlooked risk is operational—DeFi has higher entry barriers than centralized exchanges, and careless authorization can lead to giving malicious apps access or buying fake tokens.

If you really want to invest in DeFi tokens, I recommend starting with the leading projects. For DEXs, choose Uniswap; for lending, look at Aave or Compound. These projects have been tested by the market and have relatively mature ecosystems. Beginners can start by trading tokens to get familiar, then gradually participate in liquidity mining or lending. Opt for mainstream blockchains like Ethereum or Polygon, which offer better security and liquidity.

Overall, DeFi tokens represent one of the most promising applications of blockchain technology. Finance is the most lucrative sector, and the integration of blockchain with finance faces no major technical barriers. That’s why I remain optimistic about the entire DeFi sector. Of course, the specific project choice still depends on your risk tolerance and market judgment.