The preparation of WO3 nanorods by double-walled carbon nanotube(DWCNT)template was investi-gated in this study.Owing to that the prepared H2WO4 can be isolated by the homogenously dispersed DWCNT bun-dles and secondary accumulation can be avoided effec-tively,the growth of H2WO4 can be restrained,and H2WO4 nanorods with diameter of 10-50 nm can be prepared.After calcination of the prepared DWCNT/H2WO4 com-posite in oxygen,WO3 nanorods with diameter of 10-100 nm and high specific surface area of 16.4 m2·g-1 can be obtained.It is concluded that the DWCNTs play an im-portant role in the effective mediation of the morphology and size of nano-WO3.