To obtain a vibration-damping material of a low specific gravity which is lightweight and excellent in vibration-damping property and can be efficiently manufactured and easily recycled by compounding a specific inorganic expanded particle as a part of a filler.

The objective vibration-damping material comprises, as a part of a filler, highly strong, low specific gravity inorganic expanded particles obtained by coating the surfaces of inorganic expanded particles with a skin layer of porcelain, where at least 80% of the aggregate constituting the inorganic expandable particles has particle sizes ranging from 0.1 to 4.0 mm. The highly strong, low specific gravity inorganic expanded particles are contained in the low specific gravity vibration-damping material composition preferably in an amount of around 5-50 wt.% thereof. The kind of asphalt employed for the vibration- damping material is not particularly limited. As methods to apply the low specific gravity vibration-damping material on a surface to be treated, there can be exemplified (1) a method comprising laying the vibration-damping material on a surface to be treated such as metal or the like and heating thereby melt bonding to unify them, and (2) a method comprising adhering the vibration-damping material to a surface to be treated by means of one properly selected from pressure sensitive adhesives, hot melt type adhesives and double-sided adhesive tapes and melt bonding, if necessary, to unify them.