To provide a combustor and a combustion device capable of securing a sufficient combustion time without increasing a dimension of a device itself.

This combustor 3 comprises a combustion tube 13 for burning a supplied granular burned object inside, and a flow channel tube 15 at least partially formed in the combustion tube 13 to allow the air inside of the combustion tube 13 to flow therein. The combustion tube 13 is formed to be rotated around the flow channel tube 15. As the combustor 3 has a double structure of the combustion tube 13 and the flow channel tube 15, and the combustion tube 13 is formed to be rotated around the flow channel tube 15, the granular burned object can be burned while moved in a spiral inside of the combustion tube 13.