In this research, we measure tńe absorption of the electromagnetic wave by putting the different weights as 1g and 2g, and lengths as 1.5 cm, 2.5 cm, 3.5 cm, 4.5 cm, 5.5 cm of spiral copper wire and linear copper wire into the thermosetting resin respectively to make the 0.6cm and 1.2cm composite panel. Form the experiment; we know that the electromagnetic wave absorption of the spiral copper wire composite plied with linear copper wire composite is better than the single spiral copper wire composite， and we also know that the total thickness 1.2cm of the spiral copper wire composite matched with linear copper wire composite is better than 2.4cm. From the research, we know that when the copper wire composite thickness is 0.6cm, copper wire weight is 2g, and as the copper wire length is 3.5cm, the highest electromagnetic wave absorption value can reach 37dB.
