A method for implementing the subscriber port positioning by broadband access equipments, includes: when the subscriber initiates an access request, the multi-port terminal equipment captures the access request message, adds the subscriber basic information into the access request message, and transmits it to the office equipment; the single-port terminal equipment forwards the access request message to the office equipment directly; the office equipment captures the access request message, adds the terminal basic information into the access request message and forwards it to the broadband access server; for the multi-port terminal equipment, the terminal basic information and the subscriber basic information comprises the subscriber port positioning information; for the single-port terminal equipment, the terminal basic information is taken as the subscriber port positioning information; after the broadband access server receives the access request message, it extracts the subscriber port positioning information. The present invention realizes the accurate positioning for the subscriber when one GPON port of the office equipment connects multiple terminal equipments.