A family of Microsoft word processing software products for creating web, email, and print documents.
Your question is a bit unclear.
If you mean that you want to suppress the first line indent following a heading paragraph, there is no automated way to accomplish that in Word.
I recommend that you create a separate paragraph style to use for the first paragraph following heading paragraphs. You can modify Heading 1, Heading 2, etc. so that their "Style for following paragraph" is set to your custom un-intended style. Note that doing this will apply to future edits. Existing text paragraphs must be reformatted manually.