The present invention relates to a communication number display method and device. Said method includes A, in service control point configuring corresponding relation between SIM card truth number andvirtual number; B, service control point according to user dialing called number mode automation hiding or converting said user's calling number, then to make switching. And/or C, when user using virtual number as called number return dialing, service control point through searching said received virtual number with truth number corresponding relation obtaining truth number then switching calling, and to make relevant processing to calling number. Said device includes configuring unit and conversion unit, for solving user unable hiding own truth number in dialing and receiving telephone in current technology.