PURPOSE : A method for providing a real estate mediation connection service by using a push notification message of a smart device is provided to supply product information to a purchaser terminal by receiving product information suitable for corresponding purchase application from a mediator terminal.CONSTITUTION : A service providing server transmits inputted purchase hope information to a selected mediator terminal(S400). The service providing server outputs purchase application to the mediator terminal by using a push notification message. The service providing server receives product information from the mediator terminal(S500). The service providing server transmits the received product information to a purchaser terminal(S600). The service providing server outputs the transmission of the product information to the purchaser terminal by using the push notification message.[Reference numerals] (S100) Step of receiving purchase hope information including a hope area from a purchaser and accepting a purchase application; (S200) Step of searching sale information matched with the purchase hope information in a database, and transmitting the searched sale information to a purchaser terminal; (S300) Step of selecting a mediator terminal in the hope area; (S400) Step of transmitting the inputted purchase hope information to the mediator terminal, and outputting the purchase application on the mediator terminal using a push notification message; (S500) Step of receiving sale information from the mediator terminal; (S600) Step of transmitting the inputted sale information to the purchaser terminal, and outputting sale information transmission on the purchaser terminal using the push notification messageCOPYRIGHT KIPO 2013