The invention discloses a gasification furnace gas process for a reduction process of a coal gasification shaft furnace, comprising the following steps of: after carrying out dust removal and desulfuration to outlet gas of a high-temperature gasification furnace by using a waste heat boiler, heating the outlet gas by using a gas heating unit, and then making the outlet gas enter the shaft furnace for reducing iron ores, wherein the high-temperature gasification furnace is a high-temperature airflow bed gasification furnace, the gasification temperature is 1000-1700 DEG C, dry dust removal is adopted in the step of dust removal, wet-method desulfuration is adopted in the step of desulfuration, and the outlet gas of the high-temperature gasification furnace is mixed with backflow cold gas before entering the waste heat boiler. By matching with the gasification pressure of the reduction shaft furnace, the gas generated by the airflow bed gasification furnace is directly used for the reduction shaft furnace through reasonable flow configuration, without pressure conversion, so that the process is shortened, and the process investment is reduced; and in addition, by adopting the low-pressure gasification matching with the pressure of the shaft furnace, the stability of the whole process is ensured.