To provide an elastic wave communication device capable of performing long distance communication.

A signal inputted from a signal input part 11 is sent from a sending part 13 as a signal using an elastic wave as a carrier. The signal sent from the sending part 13 is received by respective repeating parts 15a, 15b, which respectively amplify the received elastic wave and respectively send signals using the elastic wave again as a carrier and the signals from the repeating parts 15a, 15b are received by repeating parts 15c, 15d. The repeating parts 15c, 15d respectively amplify the received elastic wave and transmit signals using the elastic wave again as a carrier and the signals transmitted from the repeating parts 15c, 15d are received by a receiving part 16 and extracted by a signal extraction part 12.