The present invention relates to the technical field of gas turbines, and discloses a gas turbine combustion chamber, so as to improve a fuel in the combustion chamber and an air pre-mixing structure, enable the fuel to be uniformly mixed, and lower combustion temperature to reduce production of NOx. Tempering and autoignition probabilities in the combustion process can also be reduced, and the structure of the combustion chamber is simplified. The gas turbine combustion chamber comprises a main combustion level fuel tube, a pre-combustion level fuel tube, a main combustion level swirler, a pre-combustion level swirler, a flame tube and a turbine receiver wrapping the above parts in a clearance fit manner, wherein a discharge hole of the main combustion level fuel tube is communicated with the main combustion level swirler, a discharge hole of the pre-combustion level fuel tube is communicated with the pre-combustion level swirler, a pre-mixing channel tube is arranged at exits of the main combustion level swirler and the pre-combustion level swirler, the funnel-shaped pre-mixing channel tube encircles the pre-combustion level swirler and is communicated with a flame tube head part at the entrance of the flame thube, and the side of the turbine receiver is at least provided with one air inlet duct.