The invention discloses an energy-saving and environment-friendly fuel gas burner. The energy-saving and environment-friendly fuel gas burner comprises a fuel gas mixing chamber, a combustion chamberand an air blower, wherein an adjusting ring is connected above the fuel gas mixing chamber in a sleeved mode, the combustion chamber is arranged above the adjusting ring in a penetrating mode, and acleaning rotating ring is connected to the outer wall of the combustion chamber in a sleeved mode; the interior of the cleaning rotating ring is connected with an ignition tube in a penetrating mode,one end, away from the cleaning rotating ring, of the ignition tube is connected with an ignition control button in a sleeved mode, one end, away from the adjusting ring, of the fuel gas mixing chamber is sleeved with an air regulating ring, and one side, away from the fuel gas mixing chamber, of the air regulating ring is connected with the air blower in a penetrating mode; and the interior of the air regulating ring is movably connected with a telescopic ring, and the outer wall of the telescopic ring is connected with a sleeve ring in a sleeved mode. The fuel gas burner is a device for converting a heat energy through a chemical reaction mode of burning a substance, namely air and fuel are mixed and blended according to a proper proportion through a premixing device so that the air andthe fuel can be fully combusted, the combustor is used for feeding fuel and air into a hearth according to the required concentration, speed, turbulence degree and mixing mode.