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This application provides a deburring mold for die-cast parts, relating to the field of die-cast parts processing technology. It includes a lower mold plate for placing the die-cast part and an upper mold plate disposed above the lower mold plate. An upper mold base is fixedly disposed at the bottom of the upper mold plate, and a punch is fixedly disposed at the bottom of the upper mold base. The punch is inclined and movable to insert into the side wall through-hole of the die-cast part. This mold, by setting the inclined punch, forms a dynamic shearing action with the side wall through-hole of the die-cast part. When the punch is inserted at an incline, the lateral component of the angle scrapes the root of the burr, while the vertical component completes material separation. Compared with conventional vertical punches, the inclined punch can more effectively scrape the burrs penetrating the side wall through-hole of the die-cast part, avoiding residue, reducing production time, improving production efficiency, eliminating the need for additional labor, reducing production costs, and preventing processing oversights, thus improving quality yield.