> 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-tw/latex-cuo-wu/19-latex-error-unknown-float-option-h.md).

# LaTeX 錯誤：未知的浮動體選項 \`H'

當你忘記載入 **`float`** 套件時。浮動體參數會在方括號中撰寫，只要我們使用一個 *float* 例如圖形或表格，也就是說， **`H`** 中插入一個 **`\begin{figure}[H]`**。 **`H`** 浮動體參數是 **`float`** 套件的一部分。它告訴編譯器將圖形放在頁面上的該精確位置，而不是把它移到別處。每當我們想使用這個選項時，必須在 **`\usepackage{float}`** 中加入。若想進一步了解如何使用選項來指定浮動位置，請參閱我們的 [說明文件](/latex/zh-tw/tu-biao-yu-biao-ge/02-positioning-images-and-tables.md).

## 常見原因

**忘記載入 `float` 套件的範例程式碼：**

該 [float 套件](https://www.ctan.org/pkg/float?lang=en) 提供我們 `H` 選項。這是 `h`更強的版本，並告訴 LaTeX 我們希望圖形出現在 *精確地* 這裡。如果我們使用 `H` 選項，但忘記包含 `\usepackage{float}` 在我們的前言區中，我們會得到如下所示的錯誤

main.tex，第 12 行

LaTeX 錯誤：未知的浮動選項 \`H'。

請參閱 LaTeX 手冊或 LaTeX Companion 以獲得說明。輸入 H 以取得即時說明。... l.10 \begin{figure}\[H] 選項 \`H' 被忽略，並改用 \`p'。

要解決這個錯誤，我們只需要在 **`\usepackage{float}`** 中加入，亦即在 **`\begin{document}`**


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