Provided are an antenna system, an integrated communication structure and a terminal. The antenna system comprises: a first antenna which is connected to transmission paths of a plurality of communication modules and used for transmitting transmission signals from each of the transmission paths; and a second antenna which is connected to receiving paths of the plurality of communication modules and used for transmitting a received signal from the outside to a corresponding communication module via a corresponding receiving path. By means of the technical solution of the present invention, transmitting antennas and reception antennas of all communication modules in a terminal can be integrated respectively. The number of antennas can be effectively reduced, and the stacking difficulty is reduced, thereby avoiding antenna interference among a plurality of communication devices, and making it easy to realize multi-mode.