The conditions for self-publishing a book may vary by country and region, but the following conditions must usually be met: 1. Manuscript: You need to submit a complete manuscript, including the summary, table of contents, introduction, main text, ending, etc. 2. copyright: You need to submit a copyright statement to the publishing house and pay the copyright fee. 3. Book number: You need to apply for a digital book number in order to use digital publishing technology when publishing. 4. Print and distribution: Work with printing houses and shippers to ensure that books can be printed and distributed at the expected time and place. 5. Price: The price of the book needs to be determined to match the market value. 6. Sales channels: You need to determine the sales channels such as online bookstores, physical bookstores, distribution channels, etc. 7. The author: If you choose to cooperate with the author, you may need to provide some documents and information to ensure that the author is willing to cooperate. Please note that these conditions may vary by country and region, so you need to carefully understand the specific requirements and comply with local laws.