The invention relates to a preparation method for a health care beverage with a function of eliminating alimentary anemia, and belongs to the technical field of health care food processing. The preparation method comprises the following steps: firstly, preparing black rice saccharification liquid; then, carrying out moist heat sterilization on the black rice saccharification liquid under a condition of 121 DEG C for 10-15 min, and cooling to 25-28 DEG C; inoculating a black fungus strain from a slope; under a condition of 25-28 DEG C and 120-140 rpm, performing shake cultivation for 80-90 DEGC to obtain black fungus fermentation broth; carrying out mycelium colloid mill defibrination on the black fungus fermentation broth to obtain nutritional slurry; filtering, blending, filling, sealingand sterilizing the nutritional slurry to obtain a finished product. The health care beverage disclosed by the invention has the advantages of good taste, strong jujube taste and safe drinking. In addition, the health care beverage has a function of eliminating the alimentary anemia.