The utility model belongs to the technical field of interference and adsorption of the remote-measuring electromagnetic wave, particularly relates to a wireless transmission waveguide for a remote-measuring system and aims to improve the wireless transmission accuracy of electromagnetic wave signals of the warhead remote-measuring system. The wireless transmission waveguide for the remote-measuring system comprises a support (8) and a wave-absorbing cylinder (9), wherein the support (8) is made from metal and is of a cylinder shape; the bottom surface of the support (8) is provided with an axial through hole; the wave-absorbing cylinder (9) is arranged inside the support (8), is made from a foam flat wave-absorbing material and is of a tube shape; and the outer diameter of the wave-absorbing cylinder (9) is matched with the inner diameter of the support (8). The utility model has the advantage that the wireless transmission waveguide for the remote-measuring system and wave guiding ports on a warhead hood and a missile launching canister form a transmission channel, which greatly reduces interference of the noneffective electromagnetic wave signals in the warhead hood on the effective electromagnetic wave signals and improves the transmission accuracy of the electromagnetic wave signals.