The invention discloses a magnolia essence and a preparation method thereof. The magnolia essence is composed of, by weight part, 3-5 parts of allyl hexanoate, 1-3 parts of geranyl formate, 1-3 parts of geranyl acetate, 1-3 parts of butyl acetate, 18-20 parts of benzyl acetate, 8-10 parts of amyl cinnamic aldehyde, 3-5 parts of cinnamic alcohol, 3-5 parts of clove oil, 3-5 parts of terpinyl acetate, 3-5 parts of phenylacetaldehyde dimethyl acetal, 8-10 parts of linalool, 3-5 parts of dihydromyrcenol, 3-5 parts of terpilenol, 2-3 parts of phenethyl alcohol, 3-5 parts of nonanediiol acetate, 8-10 parts of Superfix(1,1,3-Trimethyl-3-phenylindan), 2-3 parts of ethyl butyrate, 2-3 parts of aurantiol, 1-2 parts of o-tert-butyl phenol, 5-6 parts of benzyl salicylate, 5-6 parts of rhodinol, 2-3 parts of benzpyrole, 2-3 parts of fructone, 1-3 parts of amyl acetate and 1-3 parts of allyl amyl glycolate. The preparation method of the magnolia essence comprises the following steps of (1) placing, (2), stirring, (3) standing, (4) filtering, (5) detection and (6) filling. The magnolia essence has fresh and pleasant magnolia flavor and can substitute for magnolia essence oil for being widely applied to products.