Abstract: Provided is a burner module including burner rings sharing the same center but have different diameters. Each burner ring includes micro burners that are lined up in an annular shape and discharge a fuel-air mixture including hydrogen and air. Each micro burner includes: an air passage through which the air flows; and a hydrogen injection hole injecting the hydrogen into the air which has flowed through the air passage or the air which has not yet flowed through the air passage, in a direction intersecting with a flow direction of the air. At least one of the burner rings is an irregular burner ring. The irregular burner ring includes regular regions and irregular regions alternately lined up in a circumferential direction. The amount of fuel-air mixture discharged per unit area in the irregular region is smaller than the amount of fuel-air mixture discharged per unit area in the regular region.