Abstract: The present invention discloses a filtering apparatus for internet service using master antenna television(MATV) network. More particularly, the filtering apparatus according to present invention relates to a filtering apparatus for providing internet service using master antenna television network already installed in apartments or buildings, comprising a high pass filter for removing noise flowing into downward signal input into the master antenna television network via HFC network; a band pass filter for removing noise flowing into upward signal transmitted from internet terminals to the MC network through the master antenna television network; and amplifier, connected to a rear end of the band pass filter, for restoring the upward signal level decreased through the band pass filter to the original signal level by amplifying the filtered upward signal level.