Quan Gua Piper includes both the seeds and the skin of Psidium guajava, and the use of this medication needs to be under the guidance of a medical professional. Quan Gua Piper does not refer to the seeds or skin of Psidium guajava alone, it refers to the mature fruit of Psidium guajava, including the seeds and skin of Psidium guajava, is a kind of Chinese herbal medicine, sweet, bitter, slightly cold in nature, belonging to the lung meridian, the stomach meridian and the large intestine meridian, it has the efficacy of clearing away heat and resolving phlegm, moistening the intestine and laxative, and relaxing and dispersing knots, and is commonly used in the clinic for patients with lung-heat and coughing up phlegm, chest paralysis (chest stuffiness and pain) and pain, and bowel movements are dry and other patients’ treatments. It should be noted that the application of Quan Gua Piao treatment, should not be used at the same time, grass weeds, Chuan Wu, epiphyllum and other drugs, the two properties of the opposite, can reduce the efficacy of the drug; such as for the spleen deficiency and diarrhea, phlegm-dampness and yin deficiency patients, the use of the drug treatment can exacerbate the original condition, it is not appropriate to apply; the use of the drug during the treatment of the patient to pay attention to the light diet, eating fat, sweet and spicy food can reduce the efficacy of the drug. As the drug belongs to the Chinese medicine, improper application can lead to adverse consequences, the use of the drug needs to be under the guidance of a professional physician, not blindly self-medication.