The invention discloses a raw material grass packaging device for aquatic feed of groupers. The device comprises a base, the upper end of the base is provided with a support plate, the side, close tothe support plate, of the upper end of the base is provided with first hydraulic retractable rods, the end, close to the first hydraulic retractable rods, of the upper end of the base is provided witha cutter, and the bottom of the base is provided with rolling wheels. According to the device, the side edge of packaged feed grass can be cut through the cutter, the redundant feed grass at the sideedge of the packaged feed grass is conveniently cut off, and the attractiveness of the packaged feed grass can also be improved; the feed grass which needs to be packaged can be dried through a heating plate, the situation that the storage or use of the feed grass is influenced since the feed grass is damped is avoided, and the use quality of the feed grass is improved; the packaged feed grass can be conveyed out of a packaging tool through a push plate and a third hydraulic retractable rod, staff conveniently take and obtain the feed grass, and the work efficiency of the staff is improved.