The invention belongs to the field of sweet-orange essence preparation methods, and relates to a preparation method for sweet-orange essence. The method comprises the following steps: S10, proportioning raw materials; S20, performing production through throwing the proportioned raw materials; and S30, obtaining the finished product sweet-orange essence. In the S10, the raw materials and proportions (in percent by weight) are as follows: 0.022-0.03% of ethyl acetate, 0.022-0.03% of limette oil, 0.04-0.05% of acetic acid, 0.12-0.18% of Brazil sweet-orange oil, 0.21-0.29% of butyl formate, 0.21-0.29% of ethyl maltol, 0.15-0.18% of butyric acid, 0.31-0.39% of decanoic acid, 5-7% of sweet-orange tincture, 13-15% of vanillin, 22-27% of sweet-orange peel extractum, 16-19% of propylene glycol, and the balance of distilled water. According to the invention, the sweet-orange essence is prepared from the above raw materials according to the above proportions, thus a sweet-orange tropical fruit taste is guaranteed, and a fresh and sweet taste is increased at the same time; and solid is dissolved in advance, thus volatilization of the small-proportion raw materials can be avoided.