ISSN is the international standard serial number, and the full name is the abbreviation of the international standard serial number.

ISSN is a unique code assigned to continuous publications (such as newspapers, magazines and periodicals, yearbooks, etc.) with various content types and carrier types. ). ISSN is distributed by ISSN International Center, National Center and Regional Center.

It is composed of eight digits prefixed by ISSN, and is divided into two sections with four digits before and after, with a connecting number in the middle. The first seven digits are the serial number, and the eighth digit is the check code. It is worth mentioning that in China, if you want to apply for ISSN for publications, you must first apply for the domestic unified serial publication number (CN).