The invention provides a full-automatic multifunctional blocky product packaging device. The full-automatic multifunctional blocky product packaging device comprises a rack, a first work frame, a second work frame, a third work frame, a power mechanism, a bag feeding mechanism, a filling mechanism, a heat seal mechanism and a cooling mechanism. The first work frame is rotationally provided with a rotary table, and the rotary table is driven by a first drive mechanism to do the rotating motion and provided with a plurality of supporting tables provided with filling grooves. The bag feeding mechanism is used for conveying packaging bags to the filling grooves. The filling mechanism is used for conveying to-be-packaged blocky products into the packaging bags in the filling grooves. The heat seal mechanism is used for conducting heat sealing on bag openings of the packaging bags filled with the blocky products. The cooling mechanism is used for cooling the packaging bags obtained after heat sealing. A discharging port is formed in the position, below the cooling mechanism, on the first work frame, a first proximity switch controlling a movable door to be opened or closed is arranged at the position of the discharging port, and a collecting box is arranged below the discharging port. The full-automatic multifunctional blocky product packaging device achieves full-automatic and continuous packaging of the blocky products, the overall structure is simple, and operation is convenient.