The invention relates to a weldable bonding composite metal vibration-damping pipe and a preparation method thereof. The composite metal vibration-damping pipe is composed of an inner-layer metal pipe, a winding metal wire, a winding solid-state high-polymer damping film, an outer-layer metal pipe and the like; a manufacturing technology of the weldable bonding composite metal vibration-damping pipe comprises the following steps: firstly, washing and passivating the outer surface of the inner-layer metal pipe; spirally winding the metal wire on the surface of the inner-layer metal pipe; meanwhile, winding the winding solid-state high-polymer damping film on a gap where the metal wire is wound and inserting the outer-layer metal pipe which is subjected to inner surface treatment; after pre-heating to certain temperature, expanding the inner pipeline by utilizing an expansion cone, so as to enable metal wire deformation, the inner-layer metal pipe and the outer-layer metal pipe to reachintermetallic combination; meanwhile, liquefying the solid-state high-polymer damping film through heating and extruding and then filling into gaps in the middles of the metal wire, the inner-layer metal pipe and the outer-layer metal pipe; curing to form a strong bonding effect. The weldable bonding composite metal vibration-damping pipe has the advantages of convenience for machining and manufacturing, strong bonding strength and capability of being welded, and has the effects of absorbing vibration and reducing noises.