1. Determine the book purchase budget: according to the financial situation of the library, formulate the book purchase budget, including the estimated number of books to be purchased, the price grades and types of books, and the estimated amount of funds to be used.

2. Selection of purchasing channels and books selection: according to the classification and types of books, select the appropriate booksellers or channels, and screen, match and review the books ordered one by one according to the needs of readers and the budget preset restrictions.

3. Contract signing and shelf life monitoring: specify the purchase time, quantity and quality of books in the contract between the merchant and the library, and specify the after-sales service scope and supporting service process of the merchant in the contract. At the same time, it should be reviewed in time and returned or exchanged as needed.