Pus flowing from the nostrils is a result of mucosal pathological changes manifested as edema, thickening, vascular hyperplasia, lymphatic fine thoracic and plasma cell infiltration, epithelial cilia loss or squamous epithelial hyperplasia and polypoid changes, or cystic changes if the secretory gland ducts are obstructed. There are various causes. Pus in the nostrils can also be caused by fire in the body. The treatment of this disease should focus on the treatment of allergic etiology, removal of the source of infection, improvement of ventilation and drainage, maintenance of physiological function and appropriate surgery. In order to find the most suitable treatment for the patient, the patient needs to undergo a nasal examination at the Department of Five Ophthalmology so that the physician can develop the most suitable medical plan for the patient based on the examination results. Dietary care for patients with runny nostrils: 1. Patients with runny nostrils should eat more foods high in copper, which has an important impact on the development and function of the blood, central nervous and immune systems and internal organs such as the liver and heart. Foods high in copper include bran, sesame paste, spinach, rape, cabbage, celery, lentils, potatoes, fish, shrimp, crab, corn, soy products and so on. 2, eat more zinc-rich foods, such as pork liver, pork kidney, lean meat, etc. in meat; fish, nori, oysters, clams, etc. in seafood; soybeans, mung beans, fava beans, etc. in legumes; hard-shelled fruits are peanuts, walnuts, chestnuts, etc., all can be selected into the food. Oysters in particular, the highest zinc content, 100 mg of zinc per 100 grams, ranking the top of the products, known as the treasure house of zinc. 3, iron-rich food, including animal liver, lean meat, fish, blood, egg yolk …; plants in the black fungus, soybeans, millet, leafy greens … and seafood in the kelp, nori, etc. 4, eat more magnesium food, nori contains the highest magnesium, per 100 grams of nori contains 460 mg of magnesium, ranking the top of all kinds of food, is described as “the treasure house of magnesium”. The rest of the magnesium food: cereals such as millet, corn, buckwheat noodles, sorghum noodles, oats, macaroni, baked potatoes; beans such as soybeans, black beans, fava beans, peas, cowpeas, tofu; vegetables such as winter vegetables, amaranth, mushrooms; fruits such as poppy seeds, cinnamon, walnuts; other such as shrimp, peanuts, sesame, seafood, etc..