To provide a conveyor 1 without the need for attaching a detector 13 detecting carried articles on a side frame 3.

In the conveyor 1 having a pair of left and right carried article guide rail 9, a detector 13 detecting a carried article is attached on the carried article guide rail 9. The carried article guide rail is composed of a long material with L-shape cross section including a vertical carried article guide part 10 and a horizontal part 11. A free end of the horizontal part 11 is fixed on a conveyor base frame 2 to face outward of the conveyor 1. The detector 13 is attached on the horizontal part 11 via a detector fitting 14.