The utility model relates to a dust-free packaging device, which comprises a discharge mixer, and is characterized in that: a discharge port of the discharge mixer is connected with one end of a discharge pipe; the other end of the discharge pipe is connected with one end of a discharge soft plastic pipe; the other end of the discharge soft plastic pipe is connected with one end of a rubber sleeve hand gate valve; the other end of the rubber sleeve hand gate valve is connected with a discharge hard plastic pipe of which the tail end extends into a packaging bag; and an operating handle for lifting the discharge hard plastic pipe is arranged between the discharge soft plastic pipe and the discharge hard plastic pipe. According to the dust-free packaging device, the operation environment of personnel can be improved, the production cost is reduced, and the production efficiency is increased.