The invention relates to a primary die facilitating exhausting. The primary die comprises a male die and a female die which are matched with each other, a cavity communicated from top to bottom is formed in each of the male die and the female die, the two cavities are matched with each other so as to form a bottle-shaped cavity in the primary die, tight clinging surfaces of the male die and the female die which are matched are seam joining surfaces. The primary die facilitating the exhausting is characterized in that a plurality of exhausting grooves communicated with the air inside and outside the bottle-shaped cavity are formed in the seam joining surfaces, and are located in the lower half parts of the seam joining surfaces. Compared with the prior art, the exhausting grooves are formed in the lower half parts of the seam joining surfaces of the primary die, as a result, the phenomenon that vacuum is created in the bottle-shaped cavity to cause material jumping when a glass material is discharged, is avoided, and further the production quality and production efficiency of glass bottles are improved; moreover, the male die and the female die are connected via triangular ribs, so that the air in the bottle-shaped cavity firstly flows through the exhausting grooves, then flows through gaps between every two adjacent triangular ribs, and finally is smoothly exhausted into the environment.