慢性咽炎为咽部黏膜、黏膜下组织及淋巴组织的弥慢性炎症,病程长,症状顽固,其发病机制尚未明确。国内发病率占咽喉疾病的10%~20%。大同属西北盆地地区,风沙大,气候干燥,又有“煤都”之称,煤粉、粉尘污染严重,致使本地区成 Chronic pharyngitis pharyngeal mucosa, submucosal tissue and lymphatic tissue diffuse chronic inflammation, long duration, stubborn symptoms, the pathogenesis is not yet clear. Domestic incidence of throat diseases accounted for 10% to 20%. Datong is a basin of the northwestern region, the wind and sand, dry climate, but also “coal are ” said coal, dust pollution is serious, resulting in the region into