The invention discloses sunscreen spray and a preparation method thereof. The spray is prepared from, by weight, 4-8 parts of haematococcus pluvialis extract, 3-6 parts of glycyrrhiza glabra extract,3-5 parts of centella asiatica extract, 1-3 parts of wall breaking selenium-enriched yeast, 2-6 parts of zinc oxide, 1-2 parts of titanium dioxide, 0.2-3 parts of fullerenes, 2-4 parts of squalene, 6-10 parts of avocado oil, 0.3-0.7 part of dragosantol, 0.1-0.5 part of lycopene, 2-3 parts of tranexamic acid, 6-8 parts of sheep placenta polypeptide, 5-10 parts of butanediol, 0.1-1 part of hyaluronic acid, 0.6-1 part of ceramide, 0.4-0.6 part of nicotinamide, 0.03-0.6 part of allantoin, 0.2-1 part of rose pure dew, 2-4 parts of UVA absorbent, 0.1-1 part of UVB absorbent, 2-3 parts of O/W type emulsifier and 150 parts of water. The method packs and embeds surfaces of three nanoparticles through the emulsification of oil and composite nano-suspension, enhances the skin-fitting property of thesunscreen spray, prolongs the contact time of spray particles with skin epidermis, improves the sun protection factor and the whitening effect, and utilizes multi-component synergy to repair sunburnedskin.