The paper aims to study the formation of nanowires on biomorphic SiC ceramics and its influencing factors and to investigate the morphology evolutionary process and growth mechanism of nanostructures.The biomorphic SiC ceramics with different nanowires were prepared at different temperatures and with different oxygen contents during morph-genetic process.The morphologies and microstructures of nanowires were characterized by a scanning electron microscope and a transmission electron microscope.The results s...