Multi-walled　carbon　nanotubes　(MWNTs)　doped　silica　gel　glass　matrix　nano-composites　were　successfully　prepared　by　sol-gel　technique.　Morphology　of　the　composites　was　characterized　by　scanning　electrical　microscope　and　transmittance　electrical　microscope　images.　Pore　structure　of　net　MWNTs,　silica　gel　glass　matrix　and　resulted　MWNTs　doped　composites　were　studied　and　compared.　The　results　show　that　MWNTs　are　well　dispersed　in　the　gel　glass　matrix　and　sol-gel　processing　does　not　appear　to　affect　the　morphology　of　MWNTs.　Pore　structure　of　the　silica　matrix　is　changed　by　the　introduction　of　MWNTs.　©　2007　Elsevier　B.V.　All　rights　reserved.