The invention discloses a front pre-mixing combustor used for a commercial fuel gas stove. The front pre-mixing combustor comprises a stove head, an ignition needle, an ion needle, a fuel gas valve, aPWM fan, a Venturi pre-mixer, a zero-pressure header tube fuel gas solenoid valve, a pressure stabilizing vale, a commercial fuel gas stove front pre-mixing controller. The front pre-mixing combustoradopts a front pre-mixing type technology for completely mixing fuels with air before the fuels and the air enter a spray nozzle of a stove head combustion chamber, so that gas molecules are sufficiently stirred and mixed, and therefore, mixing is more complete, combustion speed is not limited by physical conditions such as gas diffusion velocity, combustion speed is higher, efficiency is higher,and emission of harmful CO in smoke gas is reduced. And meanwhile, an automatic pre-mixing technology is applied, so that mixing is guaranteed to be relatively precise. The front pre-mixing combustorguarantees working safety, and is free of phenomena such as flame-lifting, flame-floating and tempering.