The call number of a book consists of a classification number and an author number. The classification number is determined according to China Library Classification, and the author number is generated by the author's name. The general rule of shelving is to press the classification number first and then the author number. (1) The arrangement of Chinese book shelving classification numbers adopts the method of bit-by-bit comparison from left to right; If there are letters behind the numbers, they are arranged alphabetically on the basis of the same class number in front; If the recommended symbol "A" is marked at the end of the class number, it ranks first for the class; When there are auxiliary symbols in the commodity, if the symbols in front of them are the same, they will be compared and arranged in the following order: general discussion, complex semicolon-time distinguishing number-general time and place distinguishing number. The classification number is the same. According to the author number, from left to right, compare it bit by bit, with letters in front, numbers in the back, decimals in the front and large numbers in the back. (2) The shelving classification number of foreign books is the same as that of Chinese books, and the author number consists of the first letter of the author's surname and the corresponding Arabic numerals in the cutter table. When the classification numbers are the same, the shelving order should be compared from left to right in alphabetical order, and then compared in decimal system, from small to large. Second, the back issue of the book is the same as the Chinese issue. Three. Other matters 1. Books and periodicals are arranged in sorted order, from left to right and from top to bottom. 2. The books on the bookshelf should not be too full. It is best to leave a gap of 1/5 to 1/3 in each grid to supplement new books. 3, each row, each book must have a shelf label, indicating the beginning and end category number of books on the shelf.