PURPOSE: To improve ignition and flame holding properties in a burner for a gas turbine by mounting ceramic ring segments made of ceramic materials, which are excellent in high-temperature heat resistance and acid resistance, on an inner circumferential face of each of premixing ducts.

CONSTITUTION: On an inner circumferential face of an inner cylindrical part 1a included in a combustion liner 1, i.e., on faces of premixing ducts 5a to 5c, which are exposed to high-temperature combustion gas, ceramic ring segments 22a, 22b, 22c, 22d are mounted via ring segments 23a, 23b, 23c, 23d made of a heat-insulating material. Furthermore, the respective ceramic ring segments 22a to 22d are formed of ceramic materials which are excellent in high-temperature heat resistance and acid resistance. Therefore, ignition and flame holding properties in the respective stages constituting a burner are improved, and flame propagation from the upstream stages to the downstream stages can be stabilized.