The invention discloses a health food for enhancing immune function of a human body and a preparation method thereof. The health food comprises the following components in percentage by weight: 16 to 36 percent of propolis powder, 60 to 80 percent of perilla oil and 1 to 5 percent of beewax. The preparation method for the health food comprises the following steps of: heating to melt the beewax and the perilla oil, uniformly stirring, and standing to room temperature; sieving the propolis powder to obtain fine propolis powder, adding the fine propolis powder into the mixed material of the beewax and the perilla oil, and uniformly stirring and mixing; and grinding the mixture to fine slurry, standing and vacuumizing until bubbles are not generated, pressurizing to discharge the material, sieving, and packaging into capsules. The beewax and the perilla are well combined, so the health food has high content of general flavones, enhances the immune function of the human body, has no toxic or side effect and is suitable for groups in various ages.