Compound metal ion replenisher and preparation method thereof

The invention discloses a compound metal ion replenisher and a preparation method thereof, and belongs to the field of nutrition and health care and pharmacy. The method comprises the following steps: preparing a core from one of substances containing Ca, Fe and Zn, and wrapping the core by a swelling material; and coating a substance containing another metal ion on the surface of the swelling surface, and wrapping by an enteric coating material. According to the compound metal ion replenisher, different metal ions are released to the compound metal ion replenisher in different time sections and at staggering peaks through the special preparation method, so that the interaction effect of the ions is eliminated. Various ions are adequately absorbed and replenished at the same time.