The invention discloses a business card exchanging method and system. The method comprises the steps that a terminal A finds a terminal B, the terminal A sends a request for exchanging business cards with the terminal B to the terminal B, if the terminal B agrees, the terminal B saves the business card information of the terminal A and informs the terminal A, after the terminal A receives the information, the terminal A analyzes the contact information of the terminal B and stores the contact information into a local address book, if the terminal B disagrees, the terminal B sends refuse information to a server. According to the business card exchanging method and system, an effective approach for expanding and sharing information in a network is provided, and a user can find needed friends conveniently and rapidly.