The invention relates to a down-hole information acoustic wave signal relay system. The down-hole information acoustic wave signal relay system comprises an upper connector, an instruction bin protective cylinder and a lower connector which are sequentially connected. An energy converter protective cylinder, an instrument bin and an accelerometer protective cylinder which are sequentially connected are arranged in the instruction bin protective cylinder. The end of the energy converter protective cylinder is matched with the upper connector, and the end, connected with the accelerometer protective cylinder, of the instrument bin is connected with the end of the instruction bin protective cylinder. The end of the accelerometer protective cylinder is matched with the lower connector, and an energy converter is installed in the energy converter protective cylinder. A circuit module is arranged in the instrument bin and comprises an energy converter driving circuit, a coding and transcoding circuit and a decoding circuit, and an accelerometer is arranged in the accelerometer protective cylinder. According to the down-hole information acoustic wave signal relay system, while normal well drilling is kept, real-time receiving of acoustic wave signals carrying well drilling information and from the lower portion of a drilling pillar is achieved; the effective signals are enlarged and then occurs again, long-distance stable transmission of the well drilling information is achieved, and the damping problem when the acoustic wave signals carrying the well drilling information are transmitted is solved; and drilling fluid and a stratum are not relied on, the noise interference resistance capacity is high, real conversion of the well drilling information is achieved, and the application range is wide.