Abstract: The present disclosure introduces a method, a system and an apparatus of sending category information. Category information at central data storage media is stored at a category server in the form of one or more files. When the category server receives a category identification from a terminal to request corresponding category attribute information for publishing product information, the category server may inquire and return the requested category information without submitting an inquiry to the central storage media, thereby reducing operational pressure on the central data storage media and improving efficiency of publishing product information.