To analyze six cases concerning clinical features, the treatment process and curative effect of Rhinolith. The six patients had unilateral nasal obstruction, three of them were accompanied with purulent nasal discharge, two had blood with them, one patient had repeated hemorrhage of nasal cavity and two patients had developed headache. By using endoscopic, four irregular stones which are yellow, gray and brown were found in the middle and back end. Because of the severe nasal septum deviation and inferior turbinate polypoid, the stone could not be seen clearly but could be touched by aspirator. In sinus CT examination of 6 cases, it showed incomplete irregular shapes and had high density unilateral nasal cavity in the posterior segment. 4 patients had nasal deviation, 3 patients had ipsilateral sinusitis. 4 patients removed their stone by using endoscopy, 2 patients took the stone away after correction of nasal septum. Pathologic diagnosis: rhinolith. Two patients also had exogenous foreign matters which were considered as pseudo nasal stones.