Substituting books for periodicals refers to publishing books and publications in the form of periodicals. This kind of behavior is not recognized in the publishing industry because it violates the publishing management regulations. In fact, publications that replace publications with books usually face the following problems:

1. Vague definition: The definition of periodicals and serial books publications is vague, which makes the publications replaced by books easily confused with normal periodicals or books in form.

2. Legal issues: the act of substituting books for periodicals may involve legal issues, because in the publishing industry, the publication of periodicals must be approved by the General Administration of Press and Publication, and it needs a unified domestic serial number to be published. If a book is published in the form of a periodical, but the serial number is not obtained, then this behavior may violate the relevant laws.

3. Quality problems: Because the publications replaced by books need to be published in the form of periodicals, there may be quality problems in the production and printing process, such as typesetting and printing.

Therefore, although it may be necessary to replace periodicals with books in some cases, its regularity is still controversial and needs to be treated with caution.