The invention aims at providing a two-phase flow interface parameter distribution characteristic experiment device under swinging condition, which comprises a water storage box, a mixing chamber, an experiment section, an air-water separation device, an air compressor, an air storage tank, a swing table, photoelectric converter and a light source, wherein the mixing chamber and the steam-water separation device are respectively installed at both ends of the experiment section, the water storage box is connected with the air-water separation device and the mixing chamber respectively, the air storage tank and the air compressor are connected in parallel and connected with the mixing chamber, and the mixing chamber is also connected with the swing table; and an optical fiber probe and a pressure sensor are installed on the experiment section, the photoelectric converter faces to the optical fiber probe, and the light source faces to the photoelectric converter. The invention further develops and perfects an experiment device for researching the air-liquid two-phase local parameter distribution and transportation mechanism in a large channel under the steady-state condition, foaming is uniform in the experiment, a stable bubble flow can be obtained, and the outlet pressure of the air-water separation device maintains constant by means of gravity separation.