MetaMask 是什么？
MetaMask 是一个自托管 加密钱包。它允许您持有、发送和接收 ETH 和 ERC-20 代币，并连接到以太坊和其他 EVM 兼容链上的去中心化应用程序（dApp）（EVM 代表以太坊虚拟机，是运行以太坊智能合约的软件）。它可作为 Chrome、Firefox、Brave 和 Edge 的浏览器扩展，以及 iOS 和 Android 的移动应用程序使用。它是加密货币中使用最广泛的钱包之一。
"Self-custodial" means you control the private keys: not a company, not an exchange, not MetaMask itself. Access to your funds rests on a 12-word seed phrase that only you hold. That is different from keeping crypto on Coinbase or Binance, where the exchange holds the keys for you.
MetaMask is also your entry point to DeFi. It connects to protocols such as Uniswap and Aave and to many other decentralized applications. Swapping tokens, lending, providing liquidity or earning yield all start with a connected wallet.
自托管
You hold the private keys. No third party can freeze or move your funds without your seed phrase.
多网络
从网络菜单中在 Ethereum、Arbitrum、Base、Polygon、Optimism 和其他 EVM 兼容链之间切换。.
dApp 网关
Connect to DeFi protocols, NFT marketplaces and other Web3 apps from your browser or phone.
安装 MetaMask
MetaMask 提供浏览器扩展程序和移动应用两种形式。最重要的规则：每次安装都必须从官方网站 metamask.io 开始（参见来源）。假冒的 MetaMask 扩展程序和应用是常见的网络钓鱼工具。它们看起来与正版无异，却会在你输入助记词的瞬间将其窃取。.
浏览器扩展（推荐）
Go to metamask.io, open the download page and pick your browser (Chrome, Firefox, Brave or Edge). You are sent to the official extension store for that browser. Add the extension and confirm the install. The MetaMask fox icon appears in your browser toolbar.
Verification tip: in the extension store, check that the publisher is MetaMask and that the listing is the one linked from metamask.io. Never install MetaMask from a link in an email, a Discord message or a social media ad.
移动应用 (iOS & Android)
Open the App Store (iOS) or Google Play (Android) and search for MetaMask, or follow the store links from metamask.io. Check that the publisher is MetaMask (the company behind it is Consensys). The mobile app includes a built-in browser for using DeFi apps from your phone.
You can bring your existing browser wallet to mobile by importing its seed phrase, or create a separate wallet on mobile.
创建您的钱包
After installation, MetaMask walks you through wallet creation. The seed phrase backup is the step that matters most; take your time with it.
同意条款 & 创建密码
选择创建新钱包并接受条款。设置一个强密码（MetaMask 要求至少 8 个字符；越长越好）。该密码仅用于在此设备上解锁钱包。它不是您的助记词，无法在其他设备上恢复钱包。.
备份您的种子短语
MetaMask shows a 12-word Secret Recovery Phrase (seed phrase). Write the 12 words on paper in the exact order shown. Do not take a screenshot. Do not store it in a notes app or a cloud service. The phrase is the master key to the wallet: anyone who has it can take all your funds from any device.
确认您的种子短语
MetaMask 要求您重新输入部分单词，以确认您已正确记录它们。请按正确顺序选择它们。此检查可确保您在使用钱包之前拥有可用的备份。.
钱包已就绪
您的钱包已准备就绪。您可以看到您的地址（以 0x 开头）、0 ETH 的余额以及 MetaMask 主界面。您现在可以接收加密货币、添加网络并连接到 DeFi 应用程序。.
为什么您的种子短语很重要
- The seed phrase is the only way to recover your wallet if you lose access to your device. Lose the phrase and the funds are gone for good.
- Never share the seed phrase with anyone. No legitimate service, support agent or dApp will ever ask for it.
- Store it offline: written on paper or stamped on metal, ideally in a safe. Never in email, cloud storage or a file on your computer.
向 MetaMask 添加网络
MetaMask connects to Ethereum mainnet by default, but you will probably want Layer 2 networks such as Arbitrum, Base, Optimism and Polygon for cheaper transactions. Gas fees on these networks are a small fraction of mainnet fees; ethereum.org explains why (see Sources).
MetaMask 包含一个热门网络列表，您可以从网络菜单中启用这些网络。对于不在列表中的网络，chainlist.org 是一个广泛使用的目录：连接 MetaMask，搜索该网络并添加它。参数（RPC URL、链 ID、货币符号）会为您自动填充。您也可以手动输入；MetaMask 支持网站解释了如何操作（见来源）。.
| 网络 | 类型 | Fee Level | 适用对象 |
|---|---|---|---|
| 以太坊 | L1 (默认) | 最高 | 高价值交易，最高安全性 |
| Arbitrum | L2 (乐观汇总) | 低 | DeFi，交易，一般用途 |
| Base | L2 (乐观汇总) | 低 | Coinbase 生态系统，低费用 |
| Polygon | 侧链（PoS） | 非常低 | Low-cost transactions, gaming |
| Optimism | L2 (乐观汇总) | 低 | DeFi，治理，Superchain 应用 |
Fee levels are relative and move with demand; check a live gas tracker before a large transaction. To move tokens between networks you need to bridge your crypto, for example sending USDC from Ethereum to Arbitrum to use it with lower fees.
接收 & 发送 加密货币
钱包设置完成后，你可以从交易所、个人或 DeFi 协议接收代币，并将代币发送到同一网络上的任何地址。以下是每个方向的工作方式。.
接收加密货币
从 MetaMask 的账户视图中复制您的钱包地址（点击地址即可复制）。它看起来像 0x1a2B...3c4D。
将地址提供给发送方：将其粘贴到交易所提现表单中，或发送给向您付款的人。该地址是公开的，可以安全分享，就像银行账号一样。.
确保发送方使用正确的网络。如果有人在 MetaMask 显示以太坊时通过 Arbitrum 发送 USDC，在你切换到 Arbitrum 之前将看不到这些代币。它们并未丢失，只是在另一条链上。.
发送加密货币
Choose Send in MetaMask and paste the recipient's address. Check it twice: transactions cannot be reversed, and funds sent to a wrong address are lost.
Select the token and enter the amount. MetaMask shows the estimated gas fee. On Ethereum mainnet the fee depends on current demand; on a Layer 2 such as Arbitrum or Base the same transfer costs a small fraction of that.
查看详情并确认。交易将广播到网络。你可以在 MetaMask 的活动列表中追踪，或在 Etherscan 等区块浏览器上搜索交易哈希来追踪。.
Want to understand why gas fees vary so much? Read our guide on what gas fees are and how they work.
在你的 MetaMask 中有 USDC 吗？
通过 Coinstancy Dollar Savings，在 USDC 上赚取 7.50% 的年化收益率。利息每秒累计并自动复投。无锁定期，随时可提取。.
开始赚取 7.50% 年化收益率将 MetaMask 连接到 DeFi 应用
Most of what you do with MetaMask happens through DeFi apps. Here is how a connection works and what to expect at each step.
如何连接（通用步骤）
Open the dApp's official website (for example app.uniswap.org, app.aave.com or app.coinstancy.com). Type the URL or use a bookmark. Do not follow links from Discord, Telegram or email.
使用 dApp 的连接钱包选项，并从列表中选择 MetaMask。MetaMask 窗口会打开，要求您批准连接。.
Review which accounts the dApp wants to see and confirm. A connected dApp can read your address and balances but cannot move funds without a separate signature from you.
When you act (swap, deposit, lend), MetaMask opens a window describing the smart contract interaction and the gas fee. Read what it will do, then confirm or reject.
Uniswap
Swap ERC-20 tokens on Ethereum, Arbitrum, Base, Polygon and Optimism. One of the largest decentralized exchanges.
代币交换Aave
借出和借入加密货币。存入代币以赚取利息，或以持有的资产作为抵押借款。.
借出 & 借入Coinstancy
通过美元储蓄，在 USDC 上赚取 7.50% 的年化收益率。利息每秒累计并自动复投。无锁定期，随时可提取。.
USDC 收益安全最佳实践
自我托管让您拥有完全的控制权和全部责任。这些习惯可以保护 MetaMask 钱包免受最常见的攻击。如需更深入的了解，请阅读我们的 加密货币安全指南。
永不分享您的助记词
任何合法服务、支持人员或网站都绝不会索要您的 12 个单词助记词。如果有人索要，那一定是骗局，无一例外。.
使用硬件钱包
For any amount you would hate to lose, pair MetaMask with a hardware wallet such as a Ledger or Trezor. The private keys stay on the device, so a compromised computer cannot sign on its own. MetaMask supports hardware wallets directly: connect the device and add its account (see the Ledger and Trezor docs in Sources).
撤销代币授权
When you approve a contract to spend your tokens, the permission stays active until you revoke it. Use revoke.cash to review and revoke old approvals. This limits the damage if a contract you once approved is later exploited.
检测网络钓鱼尝试
Bookmark the official URLs of the dApps you use. Phishing sites copy DeFi interfaces closely. Check the address bar before you sign anything. MetaMask includes phishing detection that warns you about known malicious sites, but it cannot catch every new one.
MetaMask 替代方案
MetaMask 是最常见的选择，但有几个替代方案可满足特定需求。以下是热门选项的简要对比。.
| 钱包 | 适用对象 | 平台 | 关键特性 |
|---|---|---|---|
| Rabby | 高级用户 & DeFi | 浏览器，移动端 | 预签名模拟，自动链切换 |
| Rainbow | 移动优先用户 | iOS、Android、浏览器 | Simple interface, ENS names, portfolio view |
| Coinbase 钱包 | Coinbase 用户 | 浏览器，移动端 | 轻松法币上链，Base 网络原生 |
| Trust 钱包 | 多链初学者 | iOS、Android、浏览器 | 支持众多非 EVM 链，内置质押功能 |
All of these wallets are self-custodial and work with the same DeFi apps as MetaMask. A seed phrase is portable: you can import an existing MetaMask wallet into Rabby or Rainbow without moving any funds. The choice comes down to interface, features and workflow.
常见问题
MetaMask 免费使用吗？
如果我丢失种子短语会怎样？
我可以在多台设备上使用 MetaMask 吗？
MetaMask 支持比特币吗？
我该如何保护自己免受网络钓鱼诈骗？
什么是 gas 费用，为什么会变化？
继续学习
探索更多指南，以加深您的加密知识。.
什么是燃气费？
了解以太坊 gas 费用的工作原理、波动原因，以及如何在每笔交易中省钱。.
阅读指南加密领域的 APY 是什么？
学习 DeFi 中年化收益率的运作方式、APY 与 APR 的区别，以及复利如何提升回报。.
阅读指南如何跨链桥接加密资产
分步指南，安全且低成本地在以太坊、Arbitrum、Base 等链之间转移代币。.
阅读指南让你的 MetaMask 发挥作用
现在您的 MetaMask 已设置完成，通过 Coinstancy Dollar Savings 在 USDC 上赚取 7.50% 的年化收益率。利息每秒累计并自动复投。无锁定期，可随时提取。.
在Coinstancy开始赚取收益来源与延伸阅读
本页面中的数字和声明均基于以下文档。具有时效性的数字（利率、收益率、费用、市场数据）会变动：在据此行动之前，请在来源处核实实时数值。.
- MetaMask 支持support.metamask.io
Getting started, the Secret Recovery Phrase, adding networks, sending tokens, hardware wallet pairing, editing approvals and the current list of supported networks.
- Ethereum.org，钱包ethereum.org
What a self-custodial wallet is, how private keys and recovery phrases work, and how to choose a wallet.
- Ethereum.org, Gas and feesethereum.org
How gas works, why fees change with demand, and how to read a fee estimate.
- Ethereum.org，Layer 2ethereum.org
Why Layer 2 networks such as Arbitrum, Base and Optimism charge lower fees than Ethereum mainnet.
- Chainlistchainlist.org
Directory of EVM network parameters (chain ID, RPC, currency symbol) that can be added to MetaMask in one click.
最后审核：2026年9月。外部链接在新标签页中打开；Coinstancy 对其内容不承担责任。.