Chinese medicine considers fire as an imbalance of yin and yang in the body and internal heat. To remove fire, Chinese medicine is called clearing heat and removing toxins (removing heat and toxicity from the body), and removing accumulated heat from the body. Pu-erh tea is cold in nature, so it can remove fire. Pu-erh tea is the young leaves of Pu-erh tea, a plant of the Camellia sinensis family. It is cold in nature and has a bitter and sweet taste. It belongs to the stomach, liver and large intestine. It has the effects of clearing away heat and detoxification (removing heat and poisonous evils from the body), generating fluids and eliminating filth, and eliminating food and waking up the mind. The main summer fever and thirst; headache and dizziness; chi chi and abdominal pain; dysentery; meat and food stagnation; alcohol poisoning; fatigue (lack of mental energy) and sleep; measles, such as poor penetration. However, the active ingredients in the brew are limited and generally do not achieve the therapeutic effect. The adverse reactions and contraindications of Pu-erh tea are not clear. Patients with discomfort are advised to consult a doctor in a timely manner, and should not self-medicate to avoid delaying their condition.