A stainless steel slag jigging iron separation technique is disclosed. Stainless steel slags are screened and crushed to be supplied to a jigger quantitatively and evenly, slag-iron separation is realized by the jigger, iron granules flow into a concentrate pool, dehydration is carried out on tailings by a spiral classifier, and water can be recycled after being clarified. The technique can ensure the recovery of the iron granules in the slags to be above 98% and the dregginess of recovered iron granules to be less than 5%.