> ## Documentation Index
> Fetch the complete documentation index at: https://langchain-zh.cn/llms.txt
> Use this file to discover all available pages before exploring further.

# 安装 LangGraph

要安装基础的 LangGraph 包：

<CodeGroup>
  ```bash npm theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
  npm install @langchain/langgraph @langchain/core
  ```

  ```bash pnpm theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
  pnpm add @langchain/langgraph @langchain/core
  ```

  ```bash yarn theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
  yarn add @langchain/langgraph @langchain/core
  ```

  ```bash bun theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
  bun add @langchain/langgraph @langchain/core
  ```
</CodeGroup>

使用 LangGraph 时，通常需要访问大语言模型（LLMs）并定义工具。你可以按自己的方式实现这一点。

一种方法（我们将在文档中使用）是使用 [LangChain](/oss/javascript/langchain/overview)。

安装 LangChain：

<CodeGroup>
  ```bash npm theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
  npm install langchain
  ```

  ```bash pnpm theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
  pnpm add langchain
  ```

  ```bash yarn theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
  yarn add langchain
  ```

  ```bash bun theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
  bun add langchain
  ```
</CodeGroup>

如需使用特定 LLM 供应商的包，你需要单独安装它们。

请参考 [集成](/oss/javascript/integrations/providers/overview) 页面获取供应商特定的安装说明。

***

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