The present invention relates to the technical field of deep processing of tea, specifically to a preparation method of tea essences particles. The present invention provides a preparation method of tea essences particles, including a process of extraction, filtration and separation, purification and decontamination, activation of activity and improvement of bioavailability, and spray granulation, which enhances activity and bioavailability of the active ingredient of the tea essences, improves taste of the tea essences, and increases the product yield of the tea essences.