The utility model provides a micropore wire drawing die lower punching head, which is formed by that a steel bottom supporting part and a hard alloy punching head part are welded all together. The utility model is composed of the bottom supporting part with a discharge hole and a technological hole, and the punching head part with a core hole and a discharge hole, wherein a lug boss which is matched with a groove of the bottom supporting part is arranged below the punching head part, and is welded with the bottom supporting part as a whole; the length to diameter ratio L / d of the core hole is 2-5, and penetrates a small convex cone table above the punching head part; coaxial transitional cone holes with alpha angles 25-40 DEG is arranged between the core hole and the discharge holes. The micropore wire drawing die lower punching head can form by compressing die at one time. The utility model has the advantages of high process precision, low cost and good strength.