A wireless communication system comprising: a shield room forming section configured to form a first internal space and a second internal space with an electromagnetic wave reflector so as to block wireless communication from outside to each of the first internal space and the second internal space and block wireless communication between the first internal space and the second internal space; a leaky transmission line arranged inside the shield room forming section and comprising a plurality of leakage parts; a plurality of antennas (400, 410, 420, 430) arranged inside the shield room forming section and configured to be wirelessly communicable with the plurality of leakage parts; and a plurality of communication devices arranged inside the shield room forming section and having the plurality of antennas (400, 410, 420, 430), wherein the plurality of antennas (400, 410, 420, 430) comprises: a first antenna arranged in the first internal space inside the shield room forming section and configured to be wirelessly communicable with a first leakage part included in the plurality of leakage parts; a second antenna arranged in the second internal space inside the shield room forming section and configured to be wirelessly communicable with a second leakage part included in the plurality of leakage parts; and wherein the plurality of communication devices comprises: a first device arranged in the first internal space inside the shield room forming section and having the first antenna; and a second device arranged in the second internal space inside the shield room forming section and having the second antenna, wherein the leaky transmission line is configured as a two-way transmission line such that a direct two-way communication is performed between the first device and the second device, and wherein a number of the plurality of leakage parts is greater than a number of the plurality of antennas (400, 410, 420, 430). a shield room forming section configured to form a first internal space and a second internal space with an electromagnetic wave reflector so as to block wireless communication from outside to each of the first internal space and the second internal space and block wireless communication between the first internal space and the second internal space; a leaky transmission line arranged inside the shield room forming section and comprising a plurality of leakage parts; a plurality of antennas (400, 410, 420, 430) arranged inside the shield room forming section and configured to be wirelessly communicable with the plurality of leakage parts; and a plurality of communication devices arranged inside the shield room forming section and having the plurality of antennas (400, 410, 420, 430), wherein the plurality of antennas (400, 410, 420, 430) comprises: a first antenna arranged in the first internal space inside the shield room forming section and configured to be wirelessly communicable with a first leakage part included in the plurality of leakage parts; a second antenna arranged in the second internal space inside the shield room forming section and configured to be wirelessly communicable with a second leakage part included in the plurality of leakage parts; and wherein the plurality of communication devices comprises: a first device arranged in the first internal space inside the shield room forming section and having the first antenna; and a second device arranged in the second internal space inside the shield room forming section and having the second antenna, wherein the leaky transmission line is configured as a two-way transmission line such that a direct two-way communication is performed between the first device and the second device, and wherein a number of the plurality of leakage parts is greater than a number of the plurality of antennas (400, 410, 420, 430). a first antenna arranged in the first internal space inside the shield room forming section and configured to be wirelessly communicable with a first leakage part included in the plurality of leakage parts; a second antenna arranged in the second internal space inside the shield room forming section and configured to be wirelessly communicable with a second leakage part included in the plurality of leakage parts; and wherein the plurality of communication devices comprises: a first device arranged in the first internal space inside the shield room forming section and having the first antenna; and a second device arranged in the second internal space inside the shield room forming section and having the second antenna, wherein the leaky transmission line is configured as a two-way transmission line such that a direct two-way communication is performed between the first device and the second device, and wherein a number of the plurality of leakage parts is greater than a number of the plurality of antennas (400, 410, 420, 430). a first device arranged in the first internal space inside the shield room forming section and having the first antenna; and a second device arranged in the second internal space inside the shield room forming section and having the second antenna, wherein the leaky transmission line is configured as a two-way transmission line such that a direct two-way communication is performed between the first device and the second device, and wherein a number of the plurality of leakage parts is greater than a number of the plurality of antennas (400, 410, 420, 430).