Gua vulgaris has the effect of clearing heat and regulating qi, but it is difficult for Gua vulgaris infused in water to exert its medicinal effect and achieve the effect of treating diseases. Psidium guajava is the fruit of Juniperus communis of the Cucurbitaceae family, with the efficacy of clearing heat and purging phlegm, broadening the chest to disperse knots (broaden the chest to resolve knots of qi) and moistening the intestines, it is mainly used for the treatment of lung-heat coughs, phlegm yellowish thick, chest paralysis (chest tightness and pain), heart pain, breast carbuncle, lung carbuncle and intestinal carbuncle (carbuncle occurring in the internal organs of the bowels, with fever, pain in the right abdomen, and can be touched to feel the lump as a manifestation of the) and swelling and pain and other illnesses. Guayule should not be used with aconite drugs, and should not be taken by patients with cold spleen and stomach (spleen and stomach weak and cold). It should be noted that the efficacy of piper betel in water is very small, and can not achieve the effect of treatment of disease, if you feel unwell, it is recommended to go to the hospital as soon as possible, under the guidance of the doctor to carry out scientific treatment, do not use their own medication, so as to avoid delays in the condition, affecting the follow-up treatment.