To provide a packaging box in which an RFID tag which does not face an antenna can be detected.

The packaging box 21 includes a body 210 which has a top surface U, a base L, and a side S, first and second signal conductors 22 and 23, and an RFID tag 3. The first signal conductor 22 is provided on a first region R1 of the body 210. The second signal conductor 23 is provided on a second region R2 of the body 210. The RFID tag 3 is attached to the side S in a third region R3 as being electrically insulated from the first and the second signal conductors 22 and 23 with a first electrode thereof connected to the first signal conductor 22 and a second electrode thereof connected to the second signal conductor 23.