Generally, a book editor is to find a topic, find an author, come up with a book, and urge the author to contribute. When the manuscript was read and revised, the book went on the market. He often writes his own book reviews and invites others to write them. Some units have to declare the book publishing fund and win the book prize, and many editors have to do it. What to do and what to achieve depends on the specific unit/company and specific work requirements.