The invention discloses a preparation method of mango-flavored essence for electronic cigarettes. The preparation method comprises the following preparation steps: step 1, preparing raw materials according to certain mass percent; step 2, stirring and mixing prepared cis-3-hexen-1-ol, cis-3-hexenyl acetate, ethyl acetate, ethyl butyrate, allyl hexanoate, butyric acid, glyceryl triacetate, propylene glycol, phenethyl alcohol, ethyl thioacetate, para-mentha-8-thiolone and delta-decalactone/ethanol in a sealed space; step 3, sequentially adding prepared ethyl maltol, maltol, cedar leaf oil, sweet orange oil terpeneless, linalool and mango ketone into the stirred mixed solution; stirring until all the raw materials are completely dissolved; step 4, putting a mixed solution at room temperature and ageing for 30h to 60h. According to the preparation method of mango-flavored essence for the electronic cigarettes, disclosed by the invention, the mango-flavored essence has a special rich and fresh mango flavor and the flavor is rich, mellow and lasting; the mango-flavored essence has no nicotine, has the mango flavor which is favored by the majority of female consumers and has the effect of refreshing breath of a user.