> For the complete documentation index, see [llms.txt](https://overleaf-pro.ayaka.space/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://overleaf-pro.ayaka.space/latex/zh-cn/wen-da/87-why-can-t-i-use-bullet-without-getting-a-syntax-error.md).

# 为什么我不能使用 \bullet 而不出现语法错误？

该 `\bullet` 命令是为在数学模式下使用而定义的，因此你需要写 `$\bullet$` （或者 `\(\bullet\)`) 以在文本中使用此命令。如果你使用 `\bullet` 在数学模式外使用它将会产生错误 [`插入了缺少的 $`](/latex/zh-cn/latex-cuo-wu/25-missing-inserted.md).

或者， `\textbullet` 命令可在数学模式外使用，无需美元符号或 `\(...\)`，如下例所示：

```latex
\documentclass{article}
\title{在 \LaTeX 中的随机漫步}
\author{Overleaf 团队}
\begin{document}
\maketitle
\section{In the beginning...}
此示例演示了在数学模式中使用 \verb|\bullet|，生成 \(\bullet\)；以及在数学模式外使用 \verb|\textbullet|，同样生成 \textbullet。
\end{document}
```

 [在 Overleaf 中打开此示例](https://www.overleaf.com/docs?engine=pdflatex\&snip_name=Using+the+bullet+command\&snip=%5Cdocumentclass%7Barticle%7D%0A%5Ctitle%7BA+random+walk+in+%5CLaTeX%7D%0A%5Cauthor%7BOverleaf+Team%7D%0A%5Cbegin%7Bdocument%7D%0A%5Cmaketitle%0A%5Csection%7BIn+the+beginning...%7D%0AThis+example+demonstrates+using+%5Cverb%7C%5Cbullet%7C+in+math+mode%2C+producing+%5C%28%5Cbullet%5C%29+and+%5Cverb%7C%5Ctextbullet%7C+outside+math+mode%2C+also+producing+%5Ctextbullet.%0A%5Cend%7Bdocument%7D)

此示例生成以下输出：

![在 Overleaf 上使用 \bullet 和 \textbullet 命令](/files/3b3e36f574b5523ead9b2bf78ae6e6342f381c41)


---

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