Also known as smallpox powder, guahua root is used for clearing heat and fire, generating body fluid to quench thirst, and reducing swelling and draining pus. It can be clinically applied to common symptoms of thirst, as well as dry cough, little phlegm, peripheral fever, and it can also be seen in skin diseases, where swelling, swelling, etc., can be adjusted with smallpox powder. In clinical studies, Guahuaguang root has the effect of inducing labor and terminating pregnancy in gynecology, so in clinical applications, caution must be exercised for pregnant women. Psidium guajava root can also treat diabetes mellitus, especially for diabetic thirst symptoms, which has obvious improvement effect, and has certain adjustment effect for stomach diseases. Guahuaguang root has a certain adjustment effect on ectopic pregnancy, and also tumor, which needs to be carried out under the guidance of a doctor.