Totally-enclosed gas kitchen range

The invention relates to a fully-closed fuel gas cooker, belonging to a household fully-closed fuel gas cooking utensil. The invention is mainly to overcome technical difficulties that the prior fuel gas cooker has heavy pollution to a kitchen and low thermal efficiency. The technical proposal in the invention is as follows: the fully-closed fuel gas cooker comprises an outer ring fire hole cover, an inner ring fire hole cover and a cooking range, wherein the cooking range consists of a mixed fuel gas channel, an outer ring fuel gas cavity, an inner ring fuel gas cavity, an air inlet channel,a central air cavity and an outer ring air cavity; the outer ring fuel gas cavity is arranged at the outer edge of the cooking range; the inner ring fuel gas cavity is arranged at the middle of the cooking range; one end of the mixed fuel gas channel is communicated with one side of the outer ring fuel gas cavity and the inner ring fuel gas cavity; the central air cavity is arranged at the centerof the cooking range; the