Disclosed is a method and apparatus for integrating and managing information of mobile terminal which provide content in accordance with an efficiency of a mobile terminal. Method comprises the steps of A) adjusting whether a mobile terminal supports a user agent profile and requesting an information of the mobile terminal; B) deciding an approval on the information of the mobile terminal after identifying a registration content of the information of the mobile terminal; C) extracting a subscriber information and a device ID from a log file generated in the case that the mobile terminal accesses a wireless internet network, comparing the same with pre-stored data and updating the subscriber information and the device ID in accordance with the result of the comparison; D) inquiring and requesting the information of the mobile terminal from a content providing unit based on the subscriber information in the case that the mobile terminal accesses the content providing unit through the wireless internet network; and (E) transmitting an inquiring result of the information of the mobile terminal to the content providing unit.