The utility model discloses a LNG removes air entrainment system of ship gas station belongs to LNG technical field. The utility model discloses a LNG removes air entrainment system of ship gas station, including two immersed pumps, on wherein two immersed pumps respectively were connected to the LNG storage tank through two root canal ways, two immersed pumps collectd on same pipeline, are connected with two filling pipelines on this pipeline simultaneously, be connected with the return -air pipeline on the LNG storage tank, the muffler is equipped with the BOG storage tank on the road, and two filling pipelines are connected to the muffler respectively on the road. The utility model discloses a LNG removes air entrainment system of ship gas station can realize external filling, and boats and ships exist various navigation states and load operating mode in the motion. LNG removes air entrainment system of ship gas station has wherein carried out recycle to remaining LNG in the filling pipeline after the filling is accomplished, solved the problem that BOG discharged in the pipeline.