The first condition for reprinting and republishing a book is the uninterrupted demand of readers brought by the high quality of the book. Item b, when the book is reprinted, the layout, book number and layout remain unchanged, but the cover and title page can be redesigned; Some republished books are marked with "revised edition" in brackets at the back of the title, while others are not. In addition to the title, other books such as cover binding, format and layout can be redesigned. In item C, the procedures for reprinting and reprinting are different, and the procedures for reprinting are similar to those for publishing the first edition. Reprinting includes five procedures: checking the publishing contract, conducting market research, submitting a reprint report, reviewing reprinted books, and going through the formalities of reprinting manuscripts. Item D is reprinted, but if the pricing is adjusted, an additional code must be added after the original barcode (the whole barcode needs to be pasted again). In item E, the difference between reprinting and reprinting lies in the important condition of "author's cooperation"