Recently, someone asked me how perpetual contracts are actually traded, so I went ahead and organized my thoughts and explained it in a clear, thorough way.

Let’s start with traditional futures. A futures contract is, in essence, an agreement between two parties to buy or sell an asset at a certain price at some point in the future. The underlying asset can be commodities like oil or gold, or it can be crypto assets like BTC and ETH. Perpetual contracts are an evolved version of this: they have no expiration date, so you can hold your position indefinitely, and the funding rate mechanism keeps the contract price close to the spot price most of the time. The most important part is that you only need to put up a portion of the capital as margin to open a position—that’s where leverage comes from.

Here’s an example to make it easier to understand. Suppose you use 30,000 USDT to buy a BTC perpetual contract. This position has no time limit—you can close it whenever you want, and your profit or loss is realized accordingly. No wonder that in global crypto trading, nearly 75% happens in the perpetual contract market—this kind of flexibility really attracts people.

The core advantages of perpetual contracts boil down to a few points. First, they are priced in stablecoins, so trading is straightforward and you don’t need to go through the whole process of converting exchange rates. Second, without delivery date constraints, trading is very flexible, and you don’t have to worry about being forcibly liquidated due to expiration. The funding rate mechanism is smart: it automatically adjusts the balance between the forces of longs and shorts, ensuring the price stays closely aligned with the spot price. Combined with T+0 trading and the 7×24, year-round nonstop nature, you can open and close positions anytime. With leverage, you can adjust it yourself—common options include 10x, 50x, and 125x—so both risk and reward are amplified at the same time.

The margin mechanism is the core of perpetual contracts. You need to deposit initial margin to open a position, and the threshold is relatively low. But if your position’s losses cause the maintenance margin in your account to fall below the required level, the platform will require you to add more margin; otherwise, your position will be forcibly liquidated. Profit and loss are calculated very directly: the difference between the opening price and the closing price, plus the impact of fees and the funding rate. The platform will also use a mark price to help prevent market manipulation; this price is calculated based on an index compiled from multiple exchanges. During periods of extreme volatility, an insurance fund acts as a buffer to prevent large-scale liquidation across accounts. If a position is liquidated and there still isn’t enough money to cover it, the system will trigger an automatic deleveraging mechanism—automatically reducing leverage—to protect overall market stability.

When it comes to how to trade, there are actually quite a few strategies for perpetual contracts. The most direct is trend trading: go long or short following the trend, using technical analysis, “Chan theory,” or macroeconomic factors to judge. There’s also hedging arbitrage: open positions in opposite directions between spot and the contract—either to lock in risk or to profit from the price spread. Funding rate strategies are also quite interesting: when the funding rate is high, going short can earn the funding fee; when the funding rate is negative, holding a long position can be more cost-effective.

But risk management must be taken seriously. The most common mistake beginners make is using too high leverage. I recommend that beginners should not exceed 5x, because even small price fluctuations can cause liquidation. Position management is critical—never go all-in; leave room for stop-loss and for adding to your margin. If you plan to hold for the long term, you also need to watch the funding rate consumption, especially in a range-bound market where the funding rate can eat away a substantial portion of profits. In extreme conditions—things like price spikes (“needle” moves) and sharp sell-offs—liquidation is especially easy to trigger. Also, each platform has different rules: margin ratios, liquidation mechanisms, and the logic behind automatic deleveraging all vary, so you must study them thoroughly in advance. The last pitfall is mindset. Perpetual contracts are essentially a zero-sum game, and emotional adding to positions is a common reason people get liquidated.

Overall, perpetual contracts are like a double-edged sword. If you use them well, they can amplify your gains and provide flexible hedging; if you don’t, they can be the fastest path to ending up at zero. My advice for beginners is to start with a small position size and low leverage, and learn how to control losses first. For people with some experience, it’s possible to combine technical analysis with macro perspectives. If you want a long-term route, the most important thing is to build your own trading system and stick to ongoing review and summaries. Perpetual contracts have a low barrier to entry, but to make money, you still need to put in real effort.