The velocity histories of the Mylar flyer, Al/Mylar double-layer and Cu/Mylar double-layer driven by electric explosion of metallic foil were recorded by displacement interferometer system for any reflector (DISAR). Results show that at the charging voltage of 25.4 kV, the effective driven time and maximum flyer velocity in acceleration cavity is 1.6 μs and 4.4 km·s^-1 for the Mylar flyer, and longer than 3.0 μs and lower than 4.0 km·s^-1 for the Al/Mylar double-layer and Cu/Mylar double-layer, respectively. The materials of flyers play significant roles in their movement when it is driven by electric explosion. In comparison with the Mylar flyer, the metal/Mylar double-layer flyer is more conducive to keep running posture of flyer, but its speed is lower when flying the same distance.