Abstract: Low-heating-value gas turbine is the core equipment of an integrated gasification combined cycle（IGCC） plant. Aiming at serious burner nozzles melting of the low-heating-value gas turbine, computational fluid dynamics（CFD） was employed to construct the numerical model of the combustor and burner to analyze the reasons, considering the structure of the low-heating-value burner, fuel characteristics, and actual operation condition of the gas turbine. The CFD model shows that a small amount of syngas flows out of the flame stabilization holes of the nozzle. Then, it was pressed to the nozzle wall by air and burns there, which leads to high temperature regions and possible melting of the nozzle. To solve this problem, adding a baffle ring above the flame stabilization holes was proposed. The solution was examined by the CFD numerical model and shows that the highest nozzle wall temperature reduces from 1666 K down to 1076 K, far blew the melting temperature.