Non-destructive testing methods based on ultrasonic waves are gaining increasing attention for the defect inspection of multi wire strands. Till now, most studies take the strand as a whole assemble when investigating the propagating characteristics of elastic waves. But the studies on the transmission and coupling of elastic waves between individual wires are less reported. This paper studies the coupling transmissibility and attenuation of elastic waves at the level of individual wire via simulation and experiment. The results of two methods are in accordance with each other, showing that the transmissibility between individual wires is independent on the geometric position. Also, it is found that the elastic waves attenuate according to an exponential curve.