{"schemaVersion":1,"id":"6","slug":"what-is-gas-fee","title":"Gas 费是什么？","description":"Gas 是以太坊执行资源的计量单位，Gas 费按实际计费用量和有效单价计算。它不同于代币转账金额，也不能直接套用到所有网络。","related":[{"id":"8","title":"USDT 转不出去，提示手续费不足怎么办？","url":"/docs/usdt-insufficient-network-fee"},{"id":"12","title":"如何使用 Etherscan 查询一笔交易？","url":"/docs/etherscan-check-transaction"},{"id":"7","title":"主网和测试网有什么区别？","url":"/docs/mainnet-and-testnet"}],"publishedAt":"2026-11-03T16:37:13.275Z","updatedAt":"2026-11-03T16:37:13.425Z","url":"/docs/what-is-gas-fee","markdownUrl":"/docs/what-is-gas-fee.md","jsonUrl":"/api/knowledge/6","section":{"id":"1","slug":"basics","title":"基础知识","description":"先分清链、币、钱包与合约等基础概念。"},"categoryPath":[{"id":"1","slug":"basics","title":"基础知识","url":"/section/basics"}],"scope":null,"verification":null,"sources":[{"title":"ethereum.org — Gas and fees","url":"https://ethereum.org/developers/docs/gas/","locator":"[E2] What is gas?；How are gas fees calculated?；What is the gas limit?；Ethereum 执行交易；不概括各 L2 和 Blob 费用。核验：2026-11-03","checkedAt":"2026-11-02T16:00:00.000Z"},{"title":"EIP-1559 — Fee market change for ETH 1.0 chain","url":"https://eips.ethereum.org/EIPS/eip-1559","locator":"[E3] Abstract；Specification；Copyright；Ethereum EIP-1559；旧文 miner 用词按历史语境处理。核验：2026-11-03","checkedAt":"2026-11-02T16:00:00.000Z"},{"title":"MetaMask — How to use gas included transactions","url":"https://support.metamask.io/manage-crypto/transactions/metamask-gas-station/","locator":"[M9] Prerequisites；Use gas included transactions；Ethereum 代币列表；有条件的 Ethereum Mainnet 代币结算；不照抄互有差异的全量网络名单。核验：2026-11-03","checkedAt":"2026-11-02T16:00:00.000Z"}],"links":[{"title":"USDT 转不出去，提示手续费不足怎么办？","url":"/docs/usdt-insufficient-network-fee"},{"title":"如何使用 Etherscan 查询一笔交易？","url":"/docs/etherscan-check-transaction"},{"title":"主网和测试网有什么区别？","url":"/docs/mainnet-and-testnet"},{"title":"E2｜ethereum.org — Gas and fees","url":"https://ethereum.org/developers/docs/gas/"},{"title":"E3｜EIP-1559 — Fee market change for ETH 1.0 chain","url":"https://eips.ethereum.org/EIPS/eip-1559"},{"title":"M9｜MetaMask — How to use gas included transactions","url":"https://support.metamask.io/manage-crypto/transactions/metamask-gas-station/"}],"revision":"sha256-0077a3124db827a64f9d0533ca32d8dfc4c120073872db5d579b56c0968ba250","headings":[{"title":"通俗理解","url":"#通俗理解","depth":2},{"title":"核心原理","url":"#核心原理","depth":2},{"title":"具体例子","url":"#具体例子","depth":2},{"title":"失败为什么也可能收费？","url":"#失败为什么也可能收费","depth":2},{"title":"有 USDT 为什么还可能缺手续费？","url":"#有-usdt-为什么还可能缺手续费","depth":2},{"title":"风险或适用边界","url":"#风险或适用边界","depth":2},{"title":"相关问题与操作指南","url":"#相关问题与操作指南","depth":2},{"title":"参考来源","url":"#参考来源","depth":2}],"content":{"format":"markdown","value":"# Gas 费是什么？\n\n资源ID：6\n\n内容修订：sha256-0077a3124db827a64f9d0533ca32d8dfc4c120073872db5d579b56c0968ba250\n\n栏目：基础知识\n\n发布时间：2026-11-03T16:37:13.275Z\n\n网页：/docs/what-is-gas-fee\n\nJSON：/api/knowledge/6\n\n适用范围与核验边界请阅读正文；来源记录不代表实操验证。\n\n\n\n> Gas 是以太坊衡量交易执行资源的单位；Gas 费是为这些资源支付的费用。它与转给对方的资产金额不同，也与钱包或应用可能收取的服务费不同。[E2]\n\n<a id=\"通俗理解\"></a>\n\n## 通俗理解\n\n可以把 Gas 想成工作量的计数，把每单位 Gas 的价格想成单价。一次普通转账和一次复杂合约操作，要处理的工作不同，费用也可能不同；并不是“转的币越贵，Gas 就一定越贵”。\n\n<a id=\"核心原理\"></a>\n\n## 核心原理\n\n普通执行交易可以这样理解：\n\n`执行费用 = 实际计费的 Gas 数量 × 有效 Gas 单价`\n\n对 EIP-1559 交易，有效单价由基础费（Base Fee）与实际优先费（Priority Fee）组成，并受最高单价设置约束。基础费按协议销毁；优先费交给出块者。原始 EIP 的历史“矿工”用词不能当作以太坊当前仍采用挖矿的依据。[E3]\n\n**Gas Limit** 是执行上限，不表示必定全部消耗；**Max Fee Per Gas** 是最高单价，不是最终扣费单价。费用估算也不等于最终账单。\n\n<a id=\"具体例子\"></a>\n\n## 具体例子\n\n假设一笔没有附加数据、接收方不执行代码的普通 ETH 转账，计费用量为 21,000 Gas；基础费为 10 gwei，实际优先费为 2 gwei：\n\n`21,000 × 12 gwei = 252,000 gwei = 0.000252 ETH`\n\n1 gwei = 0.000000001 ETH。这是计算示例，**不是实时报价**；代币转账、附带数据或执行代码的账户等情况不能固定按 21,000 Gas 估算。[E2][E3]\n\n<a id=\"失败为什么也可能收费\"></a>\n\n## 失败为什么也可能收费？\n\n上链执行过程中发生错误时，业务状态可能回滚，但处理工作已经发生，仍可能收费。钱包本地阻止提交、尚未执行等情况则不能直接算作已产生链上执行费。应看交易记录与实际费用，不能只看钱包的“失败”提示。[E2]\n\n<a id=\"有-usdt-为什么还可能缺手续费\"></a>\n\n## 有 USDT 为什么还可能缺手续费？\n\n在以太坊普通自付交易中，协议费用以 ETH 支付，USDT 余额不自动等于可用的 ETH 费用余额。\n\n但“必须先有 ETH 才能用钱包发交易”也过于绝对：MetaMask 官方文档提供有条件的 gas included 方式，可以让符合条件的代币承担用户端费用结算。能否使用须看所选网络、功能条件与实际报价，服务费也可能另计；它不表示以太坊协议改为直接收 USDT。[M9]\n\n<a id=\"风险或适用边界\"></a>\n\n## 风险或适用边界\n\n不要盲目调低 Gas Limit 来省钱，也不要反复提交不明合约操作。本例不包含 Blob 独立费用，也不能作为所有 L2 的完整账单公式。TRON 的带宽与能量等资源规则应另查，不能直接套用。\n\n<a id=\"相关问题与操作指南\"></a>\n\n## 相关问题与操作指南\n\n- [USDT 转不出去，提示手续费不足怎么办？](/docs/usdt-insufficient-network-fee)\n- [如何使用 Etherscan 查询一笔交易？](/docs/etherscan-check-transaction)\n- [主网和测试网有什么区别？](/docs/mainnet-and-testnet)\n\n<a id=\"参考来源\"></a>\n\n## 参考来源\n\n- [E2｜ethereum.org — Gas and fees](https://ethereum.org/developers/docs/gas/)。\n- [E3｜EIP-1559 — Fee market change for ETH 1.0 chain](https://eips.ethereum.org/EIPS/eip-1559)。\n- [M9｜MetaMask — How to use gas included transactions](https://support.metamask.io/manage-crypto/transactions/metamask-gas-station/)。\n\n资料核验：2026-11-03。核验范围为所引文档相关段落。\n\n\n\n## 参考来源\n\n1. ethereum.org — Gas and fees\n   地址：<https://ethereum.org/developers/docs/gas/>\n   对应内容：[E2] What is gas?；How are gas fees calculated?；What is the gas limit?；Ethereum 执行交易；不概括各 L2 和 Blob 费用。核验：2026-11-03\n   核对日期：2026-11-03\n\n2. EIP-1559 — Fee market change for ETH 1.0 chain\n   地址：<https://eips.ethereum.org/EIPS/eip-1559>\n   对应内容：[E3] Abstract；Specification；Copyright；Ethereum EIP-1559；旧文 miner 用词按历史语境处理。核验：2026-11-03\n   核对日期：2026-11-03\n\n3. MetaMask — How to use gas included transactions\n   地址：<https://support.metamask.io/manage-crypto/transactions/metamask-gas-station/>\n   对应内容：[M9] Prerequisites；Use gas included transactions；Ethereum 代币列表；有条件的 Ethereum Mainnet 代币结算；不照抄互有差异的全量网络名单。核验：2026-11-03\n   核对日期：2026-11-03\n\n"}}