This utility model discloses an injection mold for a door glass groove corner, belonging to the field of injection molding technology for door glass groove corners. It includes an upper and lower mold plate. An upper template is provided at the bottom of the upper mold plate, and a lower mold pad is provided at the top of the lower mold plate. A lower template is also provided at the top of the lower mold pad. Two accessories (number nine) are fixedly installed on the lower mold plate, and accessories (number ten) are fixedly connected to the ends of the two accessories (number nine). A cylinder (number three) is fixedly installed on accessory ten. This utility model innovates through structural design, changing the design concept by adding a roller pressing mechanism to the cylinder-assisted insert. After the cylinder completes the material pushing action, the worker operates the roller mechanism to precisely push the material in through the guide rail, flattening it. Compared to manual pressing, this is more labor-saving, time-saving, and accurate, greatly reducing the labor intensity of workers while improving product production efficiency and meeting customer production capacity requirements.