The invention discloses dendrobium stem herbal tea capable of clearing away heat. The dendrobium stem herbal tea is prepared from the following raw materials in parts by weight: 40-80 parts of dendrobium stem, 15-30 parts of radix isatidis, 10-20 parts of flos chrysanthemi alba from Hangzhou of China, 2-8 parts of mint, 2-5 parts of radix scutellariae, 2-4 parts of cortex magnoliae officinalis, 2-6 parts of radices paeoniae alba, 4-10 parts of cassia seeds, 2-5 parts of capillary wormwood herb, 10-20 parts of herba gynostemmatis pentaphylli, 2-5 parts of spica prunellae, 3-5 parts of mung beans, 3-5 parts of fructus gardeniae, 5-10 parts of honey and 2-4 parts of liquorice root. The dendrobium stem herbal tea is prepared according to the traditional Chinese medicine prescription principle, can generate the synergistic interaction, treat both deficiency and excess, as well as relieve both primary and secondary symptoms, supplement the human cell viability, and promote the ecological balance of the human body, and has the efficacies of decreasing hyperglycemia, removing dryness and decreasing internal heat, simultaneously treating various diseases and keeping health. Meanwhile, a preparation method is simple, the utilization ratio of the active ingredients of the Chinese herbal medicines is high, after long-term drinking, the dendrobium stem herbal tea has the efficacies of boosting the body immunity, preventing and treating hypertension diseases, hyperlipemia, cardiac-cerebrovascular diseases, constipation, summer-heat and polydipsia, dysphoria with smothery sensation and insomnia, sore red swollen eyes, and the like. The dendrobium stem herbal tea is safe and reliable to the human body, non-toxic, and free of side effects, and is suitable for most people.