The utility model relates to a coaxial cable is compiled to dew belongs to cable technical field, including the copper conductor, the copper conductor outward in proper order the cladding have expanding foam insulator, aluminium foil establishment shielding layer and sheath, the cable mesh grid coverage rate of aluminium foil establishment shielding layer is greater than 90%, the outer wall of aluminium foil establishment shielding layer is interference fit with the inner wall of sheath. This cable mesh grid coverage rate is high, but and user direct observation braiding density.