With its distinctive properties of electrochromism,photochromism,photocatalysis and gas sensing,MoO3 has been widely used in many functional materials.One-dimensional MoO3 nanomaterials possess both the intrinsic properties of MoO3 and the advantages of one-dimensional nanometer materials,greatly broadening the application of MoO3 semiconductor materials.This paper outlines the one-dimensional MoO3 nanomaterials,including nanowires,nanorods,nanobelts,nanotubes,and coaxial nanocables.The preparation methods of one-dimensional MoO3 nanomaterials are also introduced in this paper.