The invention discloses a compounding method of optimized low-cost sesame oil. The compounding method comprises the following steps of putting licorice roots, fructus tsaoko, cinnamon bark, fresh ginger, star anise, cinnamon and dried orange peel according to a certain weight into a container with boiling water, performing distillation with steam for 1-2 hours, then putting the distilled seasoning raw materials into a crusher, and performing sufficient crushing with the crusher. The compounding method disclosed by the invention has the beneficial effects that walnut oil, peanut oil, tea oil, corn oil, carrot seed oil and olive oil are added, and trace elements of the walnut oil, trace elements of the peanut oil, trace elements of the tea oil, trace elements of the corn oil, trace elements of the carrot seed oil and trace elements of the olive oil are blended into sesame oil, so that the optimized low-cost sesame oil has special flavor; besides, the licorice roots, the fructus tsaoko, the cinnamon bark, the fresh ginger, the star anise, the cinnamon and the dried orange peel are blended into the sesame oil, so that the sesame oil is more attractive; sesame seed oil is used as a main body of the sesame oil, and besides, the usage amount of the sesame seed oil is reduced, so that the cost is reduced; and besides, the fresh ginger and the star anise are added, so that the disadvantage that the sesame oil is single in taste is overcome, and the sesame oil is easy to popularize.