The invention discloses a follow-up flattening device for material coiling. The follow-up flattening device for the material coiling comprises a material coiling main shaft, a pressure plate and a self-adaptive pressing part, wherein the material coiling main shaft is used for driving a material coiling workpiece to rotate so as to wind foil; the pressure plate is in transmission connection with the material coiling main shaft through a pressure plate follow-up transmission mechanism; when the material coiling main shaft rotates, the pressure plate vertically swings, so that the pressure plate and the lowest end of the rotating material coiling workpiece move synchronously; the self-adaptive pressing part comprises a stretchable power part and a pressure roller component; the fixed end of the stretchable power part is installed on the pressure plate; the movable end of the stretchable power part is hinged to the lower end of the pressure roller component; the foil wound on the material coiling workpiece is tightly pressed by the upper end of the pressure roller component. The follow-up flattening device for the material coiling, disclosed by the invention, is capable of dynamically pressing the foil while coiling, and therefore, the comprehensive properties of products are improved.