1, the preface is usually placed in front of the article.

2. Postscript is written after a book or article.

Second, the role is different.

1. The preface is used to explain the writing or publishing intention, arrangement style or author's situation of the book. , including comments on the author and research and clarification on related issues.

2. Postscript is mostly used to explain the writing process or evaluate the content. , also known as postscript or postscript. Sometimes the author deliberately puts forward a thought-provoking point of view on a problem in the form of postscript, which makes readers think deeply.

Third, the content is different.

1, the preface is comprehensive; Foreword has a wide range of applications, which can be used in both literary works and academic works.

2. Postscript is often smaller than the preface, and its content is often not as comprehensive as the preface, and the scale of the system is also smaller than the preface.

Baidu encyclopedia-postscript

Baidu Encyclopedia-Preface (the article is placed before the text of the work)