The invention discloses an iron-type coated-sand casting disc brake caliper body and a producing method thereof, and belongs to the field of iron-type coated-sand casing. The iron-type coated-sand casting disc brake caliper body comprises a caliper main body, a left-end fixing and supporting installing hole site, a right-end fixing and supporting installing hole site, a brake air cylinder installing groove, a brake mechanism cover hole, a synchronous adjusting chain wheel cavity groove and a brake disc installing part. The left-end fixing and supporting installing hole site and the right-end fixing and supporting installing hole site are symmetrically arranged on the two ends of the caliper main body, the brake air cylinder installing groove is arranged on the upper portion of the middle of the caliper main body, the brake mechanism cover hole is formed in the one side of the middle of the caliper main body, the synchronous adjusting chain wheel cavity groove is formed in the middle of the caliper main body, and the brake disc installing part is arranged in the middle of the caliper main body. According to the iron-type coated-sand casting technology, the technology yield is high, the organization is compact and free of leakage, the overall performance is high, the used sand is little, the equipment investment is low, the production cycle is short, the effect is rapid, the equipment occupation area is low, the production efficiency is high, the manufacturing cost is low, and the environmentally friendly performance is good.