Energy-saving gas burner

The utility model belongs to the technical field of combustors, and discloses an energy-saving gas combustor which comprises a mixing box, a connecting pipe is fixedly installed on the right side of the mixing box, a flange opening is fixedly installed at the right end of the connecting pipe, a connecting opening is connected to the right side of the flange opening through a bolt, a gas pipe is fixedly connected to the right side of the connecting opening, and a gas outlet is formed in the right side of the gas pipe. Sliding grooves are symmetrically formed in the adjacent faces of the flange opening and the connecting opening. Through the cooperation of the first sliding piece, the second sliding piece, the vent holes and other structures, the vent holes in the first sliding piece and the vent holes in the second sliding piece are gradually aligned or staggered to be blocked by rotating the driving wheel, and therefore the effects of controlling the gas amount and reducing unnecessary waste are indirectly ac