Full-length-bonding　resin　bolt　is　one　of　the　most　important　reinforcing　tools　in　the　tunnel　supporting　of　mining　industry.　The　quality　of　the　resin　bolt　embedded　in　rock　directly　affects　the　stability　and　safety　of　the　slopes　or　roofs.　This　paper　simplifies　the　resin　bolt　to　a　mechanic　model　which　is　a　cylinder　rod　with　cladding　embedded　in　infinite　medium.　The　disperse　curves　about　the　resin　bolt　are　calculated.　Propagation　characteristics　of　low　frequency　longitudinal　mode　L(0,　1)　in　full-length-bonding　resin　bolt　are　studied.　The　attenuation　of　L(0,　1)　mode　between　20　kHz-100　kHz　is　very　low,　which　indicates　that　the　L(0,　1)　mode　can　be　used　in　the　inspection　of　full-length-bonding　resin　bolts.　The　velocity　of　L(0,　1)　mode　in　the　resin　bolt　below　70　kHz　is　slower　than　the　group　velocity　of　L(0,　1)　in　free　bolt;　the　velocity　of　L(0,　1)　mode　in　the　resin　bolt　between　70　kHz-100　kHz　is　close　to　the　group　velocity　of　L(0,　1)　in　free　bolt.　At　the　same　time,　the　experiments　about　full-length-bonding　resin　bolt　detected　using　ultrasonic　guided　wave　are　carried　out.　The　Experiment　results　are　consistent　with　those　of　theory,　which　shows　that　L(0,　1)　is　applicable　to　the　nondestructive　testing　of　full-length-bonding　resin　bolts.