Objective：To study the correlation between imaging anatomy of the ostiomeatal complex (OMC) and chronic sinusitis, and provide a new way of anatomy and radiology for OMC study. Methods： Sixty-seven coronal CT slices were observed. The items observed including: attachment of the superior part of the uncinate process, highness and thickness of the uncinate process, length and width of the ethmoidal infundibulum, diameter of ethmoid bulla and agger nasi. The correlation between the results of measurement and the scores of the sinusitis patients were also analysed. Results: The superior part of the uncinate process may attach to 3 different structures：the skull base, the lamina papyracea and the middle turbinate, their proportion in sinusitis patients and non-sinusitis persons showed notable divergence. The ethmoidal infundibulum of sinusitis patients was obviously longer than that of non-sinusitis persons (P<0.01). The length of infundibulum and the angle of uncinate process were correlated to the score of the sinus opacity of sinusitis patients. Conclusion：There is an intimate relationship between the anatomic factors of OMC and the initiation, development of chronic sinusitis.