There's no META HTML tag

hi.i check my site :

There’s no META HTML tag of type description in the HEAD of this page.

Key points

A pages META description summarises its contents in a couple of sentences.

how to put this meta html tag ?

If you mean the meta TITLE and DESCRIPTION tags … those are best done using a plugin like YOAST SEO, as recommended in the docs.

For posts, the description tag is usually picked up from the excerpt. For pages, simply put something in the excerpt box. For the home page, you need to use a plugin like Yoast to “insert” and customize that for your static page.

YOAST SEO really best solution to manage all the meta data for posts, pages, homepage, categories, etc.