To provide a vibration damping member provided with plasticity and its production method.

This damping member consists of a metal powder, single or plural metal powders capable of forming an alloy with metal or an alloy powder and has a three-dimensional reticular porous sintered compact structure having a pore part and a skeletal part. The skeletal part consists of a porous sintered compact having a microporore relatively smaller than the pore, and a low-m.p. metal or alloy is filled in the porous sintered compact to impart plasticity to the member. An aq. slurry contg. metal powder and/or alloy powder, a water- soluble hydrocarbonic org. solvent, a surfactant a water-soluble resin binder and water is compacted, the org. solvent is vaporized to obtain a compact having a three-dimensional structure, then the compact is sintered to obtain a porous sintered compact, the low-m.p. metal or alloy is filled, and the compact is compression-molded to obtain the member.