The invention discloses an adjustable glass molding machine and belongs to the technical field of molding machines. The adjustable glass molding machine comprises a rack, guide plates on the rack and press rods penetrating through the guide plates; the adjustable glass molding machine is characterized in that the press rods are rectangular, and springs arranged on the press rods in a sleeving manner are arranged between the rack and the guide plates; sleeves matched with the press rods are arranged on the guide plates, and adjusting pieces are arranged between the press rods and inner walls of the sleeves, so that problems that the molding precision is affected due to the fact that press rods of existing glass molding machines rotate easily, sleeves are not adjustable and maintenance costs are high are solved.