The invention discloses a combustor for a fuel cooker. The combustor comprises a nozzle, an injection pipe, a base and a gas mixing chamber, wherein one end of the injection pipe is connected with the nozzle, the other end of the injection pipe is fixedly connected with one end of the base, a partitioning plate is arranged on the other end of the base, the gas mixing chamber is formed by a space of the base below the partitioning plate, and net-shaped fire holes are arranged in the partitioning plate and are regularly arranged in the circumference direction. The spacing among the fire holes is preferably 1.5-2.0mm, and the height of the fire holes is preferably 0.5-1.0mm. The quantity of the fire holes is preferably 300-500. The net-shaped holes are centrally arranged, and thus the uniformity is achieved in heating, the distance between the fire holes and the bottom of a pot is reduced, the contact time of high-temperature smoke and the bottom of the pot is increased, the heat efficiency is greatly increased, the CO emission is reduced, and a national energy-saving and environment-friendly standard is achieved. In addition, according to the combustor, heating is carried out by adopting infrared radiation, full combustion is achieved, the cooker is not polluted, and the power of the combustor is conveniently regulated and the regulating is not restrained and interfered by fire power among gears.