Foods that sinusitis patients can eat are: 1. Eat plenty of fresh fruits and vegetables to get enough vitamin C. Citrus fruits, grapes and blackberries are especially beneficial because they also contain bioflavonoids, which, along with vitamin C, keep microvasculature healthy. Bioflavonoids also have anti-inflammatory effects. 2, decongestant herbs and spices, including raw or cooked onions and garlic, ginger, musk, elderflower, horseradish, cloves and cinnamon; 3, sunflower seeds, seed oil for vitamin E; 4, nuts for zinc; 5, eat more whole grains, legumes and nuts for vitamin B, which helps maintain normal immune function whole grains and legumes. Foods that sinusitis patients should not eat are: seafood, raw and cold foods, spicy foods, tobacco, alcohol, etc. Pay attention to lifestyle habits: change the physical state, improve resistance, such as regular exercise, strengthen nutrition, appropriate vitamin supplements, avoid overexertion, increase and decrease clothing at the right time to avoid the occurrence of colds and flu; quit smoking and alcohol stimulation and other bad habits. Do not swim in unhealthy swimming pools, rivers and lakes to prevent sewage from choking into the nasal cavity; go to the hospital promptly after nasal trauma to prevent infection affecting the sinuses. Avoid going to environments with serious air pollution or places with a lot of pollen or very low temperatures.