In interactive advertisement offering method and system, a server wirelessly receives from a user terminal an input signal, which is associated with a target TV advertisement viewed by a user of the user terminal. Upon identifying one TV advertisement to be the target TV advertisement based on the input signal, the server determines one of pre-stored Internet advertisements as a reference advertisement based on key terms representative of the target TV advertisement, and then transmits to the user terminal a reference advertisement menu generated thereby along with pre-stored Internet advertisement content corresponding to the reference advertisement for display of the reference advertisement menu on the user terminal.