The utility model mainly relates to a structure of a gas phase medium gasification nozzle for a non catalytic oxidation gasification furnace, in particular to a structure of a gasification nozzle which takes inferior hydrocarbon as the raw material to generate synthesis gas through the non catalytic oxidation method. A inferior hydrocarbon gasification nozzle comprises a medium inlet pipe (2) with a flange fixedly connected with a multi-airflow channel which is corresponding to the medium inlet pipe (2), at least two medium channels (101 and 102) are arranged, and the center lines of the two medium channels (101 and 102) are coincident; in the nozzle position, the included angle alpha 1 of the boundary line and the center line on the inner side at the lower end part of the first medium channel (101) is 0 to 10 degrees, and included angle alpha 2 of the boundary line and the center line on the inner side at the lower end part of other airflow channels (102) is 25 to 35 degrees. The structure has the advantages that the assembly and the disassembly are convenient, the nozzle head which is easy to be damaged is convenient to be maintained or changed, thereby the whole nozzle is not required to be rejected, and the service life of the nozzle body is effectively prolonged.