"Yellow Pages" originated in North America, and the world's first yellow pages phone book appeared in the United States in 1880, with a history of more than 100 years. The Yellow Pages is an international telephone directory of industrial and commercial enterprises arranged according to the nature of enterprises and product categories. Mainly publish the name, address and telephone number of the enterprise, which is equivalent to the household registration book of industrial and commercial enterprises in a city or region. The international practice is to print on yellow paper, so it is called yellow pages. At present, we often refer to the yellow pages as the phone book. At present, almost every city in the world has a telephone book (yellow pages) printed on this paper. Popular business directories, business guides, consumer guides, etc. It can also be regarded as various manifestations of the yellow pages; The Yellow Pages can be released and published to the public in various forms such as printed matter, CD-ROM and Internet.