Spot trading refers to the buying or selling of actual digital currencies, which means that traders must directly hold or sell the digital currencies. The price of spot trading is usually the real-time market price, and traders can trade at any time without an expiration date.

Contract trading refers to a derivative trading method where traders can buy or sell the underlying digital currency at a specific price on the contract expiration date. Unlike spot trading, traders do not hold the actual digital currency but trade based on the price changes of the digital currency.