Abstract: The packed tower is the indispensable processing equipment in modern chemical technique and production, and its performance is partly influenced by the gas distributor. The gas distributor with great uniform distribution effect can, in a way, enhance the absorption effect of packed tower. The twin-tangential annular flow gas distributor is widely applied in packed towers owing to its advantages of small pressure drop, little liquid entrainment and better gas distribution. In this paper, the twin-tangential annular flow gas distributor was taken as the study object to conduct the experimental study on the adaptability of gas distributor in the FLNG packed tower in the sea conditions of sloshing, including quiescent condition, rolling, pitching and yawing by 8 degrees and swaying, surging and heaving by 150 mm in the cycle of 16 s. It is shown that 6 freedom-degree sloshes except the swaying promote the uniform gas distribution. In the working condition of swaying, the gas distribution is not uniform and its coefficient is 3.03% higher than that of quiescent condition. Therefore, the design of gas distributor in the FLNG packed tower can be consistent with that on the land.