Improved burner structure and gas oven

The utility model discloses an improved burner structure and a gas oven. The improved burner structure comprises an injection pipe and a gas diffusion pipe. The injection pipe and the fuel gas diffusion pipe are provided with hollow cavities. The gas inlet end of the injection pipe corresponds to the gas nozzle, and the gas outlet end of the injection pipe is communicated with the gas diffusion pipe; an air inlet groove is formed in the air inlet end; a Venturi structure is formed on the injection pipe through a stamping process; the venturi structure is sequentially provided with a contraction section, a throat knot and an expansion section in the direction from the air inlet end to the air outlet end. The contraction section is provided with a secondary air supplementing hole. According to the utility model, the mixed air flow of gas and air can be gradually accelerated at the contraction section, and the secondary air supplementing hole is formed in the contraction section, so that secondary air can be suc