The utility model discloses a flying-together device. The flying-together device comprises a cup flying barrel. A plurality of air holes are formed in the upper wall of the cup flying barrel. An air inlet outer ring is arranged on the outer sides of the air holes in a sleeving mode. A first cup blocking mechanism is arranged in the middle of the cup flying barrel. A second cup blocking mechanism is arranged on the lower portion of the cup flying barrel. According to the flying-together device, through cooperative operation between the first cup blocking mechanism and the second cup blocking mechanism, two or more paper cups can be stacked before entering a vacuum conveying pipeline, as a result, the ratio of the diameter of cup openings to the height of the paper cups can be reduced, and the situation that the paper cups are overturned inside the vacuum conveying pipeline and then conveying is affected can be effectively avoided.