The utility model discloses a suspension cable is with built -in vibration -damping device, including the suit in the suspension cable with draw the annular rubber sheath between the noose pipe, be provided with inboard steel in the annular rubber sheath and protect a section of thick bamboo, annular oily bag and outside steel and protect a section of thick bamboo, inboard steel protects a section of thick bamboo, annular oily bag and outside steel and protects a from interior to exterior and lay just that the three all is coaxial laying with annular rubber sheath, the inboard steel protects a section of thick bamboo, outside steel protects a section of thick bamboo, goes up steel sheath of annular steel sheet and lower annular steel sheet component, the oily bag of annular is located the steel sheath, is provided with the oily bag installation cavity that supplies the installation of annular oily bag in the annular rubber sheath, the notes oil pipe with the inside intercommunication of annular oily bag is equipped with on the annular rubber sheath. The utility model has the advantages of simple structure and reasonable design and process preparation and simple installation, excellent in use effect, can install portably, fast in the suspension cable and in drawing the space between the noose pipe, require lowly to the suspension cable installation accuracy to can and draw the noose pipe to carry out the uniform contact with the suspension cable, the damping be effectual, economical and practical.