To provide a circular fluorescent lamp with display items changing in accordance with a change of brand names displayed on a base, doing away with the need to stop a lamp manufacturing line due to difference of display.

For the circular fluorescent lamp 1 provided with a glass tube 3 with phosphor printed on its inner face and rare gas and mercury sealed in, and a base 2 fitted at an end of the glass tube 3, at least such display items that change in accordance with the change of brand names are displayed on the surface of the base 2.