Inspired by the formation of stalagmite in nature, calcium carbonate nanoparticles (CaCO3) have been successfully generated along multiwalled carbon nanotubes (MWNTs) backbones periodically via a very simple wet chemical route, thus forming the kabob-like MWNTs-CaCO3 hybrids. These MWNTsCaCO3 hybrids are expected to have many potential applications in biomaterials and polymer reinforcement.