The invention discloses a PVC drug mounting board. The PVC drug mounting board comprises a mounting outer board and a mounting inner board, both the mounting outer board and the mounting inner board are made of PVC textures, and of annular structures, and annular baffles are connected to the position between the mounting outer board and the mounting inner board; the baffles are in a circular array around the central axis of the mounting outer board, the baffles divide the space between the mounting outer board and the mounting inner board into a plurality of cavities, through holes are formed in the side edge of the mounting inner board, and the through holes communicate with the cavities; sealing membranes are mounted on the end faces of the through holes in a sealing mode, and a connecting device is mounted between the two ends of the mounting outer board; and the connecting device comprises a first connecting board, a first fixing shaft, a sleeve, a second fixing shaft and a second connecting board, the first connecting board is connected with one end of the mounting outer board, and the first fixing shaft is mounted on one side, away from the mounting outer board, of the first connecting board. The PVC drug mounting board can well protect the packing membranes, and thus the airtightness of packaging and the quality of the drug are improved.