The invention belongs to the field of chemical engineering and particularly relates to an efficient gas-liquid reaction kettle. Through the reaction kettle, the concentration gradient of a gas phase and a liquid phase in the reaction kettle can be effectively reduced, and all material components tend to be identical in staying time in the reaction kettle. The reaction kettle is provided with a stirring device, baffle plates, cooling fins, a spiral gas distributor and a liquid phase feeding nozzle, the stirring device is composed of a motor, a stirring shaft and stirring blades, and the stirring blades comprise the spiral blade and the long-strip-shaped blade. One or more gas phase feeding inlets are formed in the bottom of the reaction kettle, one or more liquid phase feeding inlets are formed in the lower part of the wall of the reaction kettle, meanwhile, the reaction kettle is provided with a pressure gauge and a thermocouple, and corresponding pipelines are each provided with a flowmeter and a control valve. Through the reaction kettle, the problems that the gas phase and the liquid phase are mixed unevenly, and staying time of materials is different are solved, meanwhile, the mixing effect of the materials is improved, a local sharp reaction is avoided, all the materials enter the reaction kettle to complete a reaction rapidly, and product quality is guaranteed.