Guava leaf is made from the leaves of the myrtle plant guava Chinese herbal medicine, has the effect of drying dampness and strengthening the spleen, clearing heat and removing toxins, astringent diarrhea. Guava leaf is mainly suitable for the treatment of gingival swelling and pain, food stagnation (indigestion of food and stagnation in the stomach) bloating, diarrhea and abdominal pain, boils (mostly occurring in the limbs or facial sores, the shape of a small root deep, such as nails like hard) swelling and poisoning, rheumatism paralysis, eczema Polycarbonates, traumatic bleeding, bruises and pain, snake and insect bites. The herb should be used with caution in cases of constipation, diarrhea and dysentery that have not been cleared. There are no clear adverse reactions to the use of the drug. Specific medication regarding guava leaves should be administered under the guidance of a specialist.