The invention relates to the technical field of sewage disposal technologies, and discloses an aerating apparatus. The aerating apparatus comprises an aerating box body, a first motor, a first rotary shaft, a floating stirring part, an air blower, an aerating stirring rod, an air venting valve, multiple aerators, an air exhausting chimney, a water draining pipe and a water draining valve; the aerating box body is provided with an aerating cavity, a sewage inlet is formed in the aerating box body and the aerating cavity is a rotational cavity; the first motor is arranged in the aerating box body; the first rotary shaft is fixed to an output shaft of the first motor and is coaxial with the aerating cavity. Through the arrangement of the aerators on the aerating stirring rod, the aerating apparatus can conduct aerating and at the same time stirring on the sewage after the sewage enters the aerating cavity, and thus aerating efficiency of the aerating apparatus is improved.