#Gas费影响 in cryptocurrency trading, **Gas Fees (transaction fees)** have a significant impact on traders and automated trading bots (such as Freqtrade) in the following ways:

1. Increased Trading Costs

• Each transaction requires payment of Gas Fees, which affects profits, especially when trading volumes are small.

• On ETH and other EVM-compatible chains (like BSC, Polygon), Gas Fees can skyrocket during network congestion, leading to high trading costs.

2. Impact on Transaction Execution Speed

• High Gas Fees represent faster transaction confirmation speeds, suitable for high-frequency trading (HFT).

• Low Gas Fees may cause transactions to get stuck in pending status, affecting the execution efficiency of automated trading strategies.

3. Limitations on Short-Term Trading Strategies

• Frequent trading (such as grid trading, momentum trading) may become unprofitable due to high Gas Fees.

• Some trading bots calculate profit and loss (PnL) after deducting Gas Fees to decide whether to execute trades.

4. Exchange Selection

• Centralized exchanges (CEX) like Binance, OKX usually do not have Gas Fees (but do have trading fees).

• Decentralized exchanges (DEX) rely on blockchain Gas Fees, such as Uniswap, PancakeSwap, resulting in higher trading costs.

5. Impact of Layer 2 and Alternative Public Chains

• Layer 2 (such as Arbitrum, Optimism) can reduce Gas Fees but may affect trading liquidity.

• Other public chains (like Solana, Avalanche) have lower Gas Fees, but market depth may be lower compared to mainstream chains.

6. Dynamic Management of Gas Fees

• Predicting Gas Fee changes: Use Gas fee monitoring tools (like Etherscan Gas Tracker) to adjust trading times.

• Dynamic Gas settings: Freqtrade can integrate Gas fee monitoring APIs to ensure reasonable Gas Fees during trading.

7. Optimization of Automated Trading

• Batch Transactions: Combine multiple transactions to reduce Gas Fees.

• Flash Loans: No need to prepay Gas Fees, but repayment must occur within one block.

• MEV (Maximum Extractable Value): Utilize Gas Fee bidding to capture arbitrage opportunities, but may also face front-running.