Single-crystalline PbCrO4 nanowires have been successfully synthesized by a simple solution method at room-temperature. Amorphous PbCr3O10 nanotubes could be hydrothermally prepared from PbCrO4 nanowires in the presence of PVP. This simple method needs no any seed, catalyst, or template, and may also be extended to the fabrication of other 1-D chromates.