The invention discloses an anti-allergy whitening and moisturizing composition and a preparation method thereof. The anti-allergy whitening and moisturizing composition is prepared from the following raw materials in percentages by weight: 10%-20% of pearl powder, 6%-10% of emulsifiers, 10%-20% of grease, 10%-15% of tea polyphenols, 15%-20% of natural plant extracting solution, 1%-3% of vitamins, 4%-6% of auxiliaries and 20%-30% of water. According to the invention, the grease is rich in unsaturated fatty acid, vitamin K, vitamin E, vitamin A, vitamin D, etc. and phenolic antioxidant substances, so that the grease can eliminate wrinkles on the face and prevent skin from aging, and has the effects of protecting skin, protecting hair, preventing rhagadia of hands and feet, etc. Moreover, the natural plant extracting solution, by adding lightyellow sophora root extract, has the effects of promoting collagen synthesis, resisting bacteria, diminishing inflammation, etc.; in addition, the natural plant extracting solution, by adding Ningxia barbary wolfberry fruit extract, can inhibit the generation of melanin to play a role in brightening skin; furthermore, the tea polyphenols have various physiological activities, such as oxidation resistance, radiation protection, aging resistance, blood fat reduction, blood sugar reduction, bacterium and enzyme inhibition, etc.