The invention relates to a carbon zinc-manganese dry battery using a battery steel shell as a container and a manufacturing process thereof. The structure of the dry battery comprises a battery core wrapped in a pulp layer paper, the upper part of the battery core is pressed by a double pressure ring, the carbon rod is placed at a center position of the battery core powder, and a positive electrode cap and a sealing ring are arranged at an upper end of the carbon rod, wherein The zinc skin is set on the outer side of the pulp paper, and the steel shell is arranged outside the zinc skin, and the steel shell is tightly connected with the sealing ring. Due to the steel shell structure, the steel shell is both a battery container and a negative electrode. The metal zinc is only used as a reaction material of the battery, so the wall thickness and height of the zinc skin can be greatly reduced, thereby fundamentally saving zinc raw materials. The amount of use reduces costs.