The publishing house has a lot of work. Of course, without exception, it all revolves around the publication of a book. The process of publishing a book is roughly as follows: planning the topic-soliciting contributions-soliciting contributions-reviewing manuscripts-editing and proofreading (besides designing the layout and cover, by the way, consider whether the inner pages need illustrations)-finalizing the manuscript-going to press (the editing work of the publishing house is completed here). Printing is usually outsourced to a printing factory)-printed into books-entering the market.
Among them, the bold part is what editors need to do. Therefore, of course, the most common in publishing houses are text editors, who are the nannies of a book.