The invention discloses a hexagram-type dispersed anti-wave sub-spacer system for an extra-high voltage eight-bundle power transmission line. The hexagram-type dispersed anti-wave sub-spacer system comprises eight groups of anti-wave sub-spacers, which are arranged along the axial direction of the eight-bundle power transmission line at intervals, wherein two ends of the first groups of anti-wave sub-spacers are respectively fixed on a first lead and a fourth lead of the eight-bundle power transmission line; two ends of the second groups of anti-wave sub-spacers are respectively fixed on a second lead and a fifth lead of the eight-bundle power transmission line, and so on; and two ends of the eighth groups of anti-wave sub-spacers are respectively fixed on an eighth lead and a third lead of the eight-bundle power transmission line. According to the hexagram-type dispersed anti-wave sub-spacer system, through different treatment on dynamic characteristics of multi-bundle lead sub-spans, the vibration energy can be mutually absorbed among various sub-spans, so that the wave inhibition effect of the extra-high voltage power transmission line is effectively improved.