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目的 :通过研究鼻中隔各部厚度的变化及其与周围结构的关系 ,为临床涉及鼻中隔的疾病的诊断和治疗提供解剖学依据.方法 :采用 18具成人头部连续冠状和横断层标本 ,观测鼻中隔及其邻近结构.结果 :鼻中隔各部厚度不一 ,鼻中隔前 1/3的中段最厚 ,达 10 8± 1 2mm ;后部较薄处仅为 1 5± 0 3mm.增厚的部分以粘膜为主 ,达 8 6± 0 7mm.结论 :在行鼻中隔偏斜纠正术、判断鼻腔出血的部位及寻找鼻腔通气障碍的原因时 ,均应考虑鼻中膈增厚的因素“,”Objective:In order to provide anatomical data for diagnosis and therapy of diseases of nasal septum, the changes of thickness of nasal septum were studied. Methods: The width and length of nasal septum and nearby structures were observed and measured with 18 head specimens of coronal and horizontal sections. Results: The thickness of nasal septum is various at different area. The thickness of anterior one third of nasal septum is 10.8±1.2mm that it is the thickest of all parts. The posterior part is thinner with 1.5±0.3mm. The part of thickness consists of mucosa mainly and the thickness of mucosa is 8.6±0.7mm. Conclusions: This study has clinical significance such as nasal septum surgery, the hemorrhage of nasal cavity and nasal airflow obstruction.