The invention discloses a preparation process of traditional Chinese medicinal instant tea. The preparation process is characterized by comprising the steps of decoction piece preparation, extraction, concentration and drying, blending and mixing, tabletting and the like. Specifically, the preparation process of the traditional Chinese medicinal instant tea comprises the following steps: processing medicinal materials into decoction pieces according to the decoction piece processing standard, extracting the decoction pieces, collecting the volatile components of the traditional Chinese medicinal decoction pieces, thus obtaining volatile oil, concentrating the extracting solution obtained after the extracting process, carrying out spray drying on the concentrated solution, thus obtaining dry extract powder, adding with auxiliary materials, carrying out homogenizing, carrying out degassing, thus obtaining tea powder, or, carrying out tabletting on the tea powder, thus obtaining tablets. The process has the advantages that the traditional Chinese medicinal instant tea can be directly drunk after being dissolved, the carrying is convenient, the dosage is accurate, and the quality can be guaranteed.