A gas switch capable of adjusting fire intensity finely includes a gas switch capable of adjusting fire intensity finely, comprising a switch body inside which a guide is installed, a valve set that revolves inside the switch body and includes a hollow valve and a pilot valve moving elastically through the valve, a drive component installed inside the switch body, which contains a rotating rod that can move along and rotate round the same shaft of the valve set, a guide rod placed on the rotating rod and leaning on the guide, a regulating block installed movably at one end of the rotating rod and leaning against the pilot valve, and a connecting component for linking the drive component with the valve set flexibly.