The　synthesis　of　Ce-W　composite　nanopowder　plays　an　important　role　in　the　preparation　of　relevant　alloys.　In　the　paper,　the　Ce-W　composite　nanopowder　were　prepared　by　liquid-liquid　mixing,　freeze　drying,　and　two-stage　reduction.　The　particle　size　of　the　powder　produced　is　in　the　range　of　20　and　30　nm.　Homogeneous　microstructure　and　uniform　distribution　of　Ce　were　found　in　this　powder.　The　phase　compositions　during　the　producing　process　of　nanopowder　were　studied　by　XRD.　The　appearances　of　the　freeze-dried　powder,　the　first-reduced　treated　powder,　and　the　finally　obtained　nanopowder　were　analyzed　by　SEM,　FESEM,　as　well　as　TEM.　Research　results　showed　that　most　of　the　powders　existed　in　the　non-hygroscopic　and　non-crystalline　state.　The　final　product　of　the　experiments　was　the　W-Ce2WO6　nanopowder,　which　existed　in　the　form　of　crystalline　state.　IR　analysis　indicated　that　the　freeze-dried　powder　remained　a　Keggin　structure.　In　addition,　the　TG　and　DTA　thermal　analysis　explained　that　the　losing　water　contained　in　the　powders　could　be　processed　in　three　stages.　(c)　2004　Elsevier　B.V.　All　rights　reserved.