The present invention relates to a GSM mobile document transfer system for supporting MIDP environments and a transferring method thereof, in that a MS office document or another office document are transferred to a mobile communication terminal through a web to phone manner, whereby it can receive and view the office and image documents in general GSM mobile communication terminal at any time without installing a separating document viewer beforehand. Accordingly, the documents can be received through the GSM mobile communication terminals for supporting MIDP environments at any time, so that it can view the document in the unspecific GSM mobile communication terminals for supporting MIDP environments without installing separating view programs. Also, the documents can be received through all of the GSM mobile communication terminals, so that various office, image and fax documents, which are transferred by only an E-mail in the prior art, can be directly transmitted to the receiver mobile communication terminal, whereby the user can send and receive the desired document without restrictions on time and place.