A radiological study was carried out for the purpose of observing functional disorders of the pharynx, which were as follows, i.e. pharyngeal stasis, asymmetrical deglutition, piece meal deglutition, aspiration into the trachea, pharyngeal laxity, hesitant deglutition, pharyngeal spasm, esophago-pharygeal regurgitation and regurgitation into the epipharynx. Among these disorders pharyngeal stasis, 'asymmetrical deglutition and piece meal deglutition were more frequently observed than others.It was a matter of course that these radiological findings were valuable for diagnosing diseases of the pharynx, particularly paralysis of the pharynx. Furthermore, a close connection between these findings and diseases of esophagus was indicated in our case series, that is, some pharyngeal disorders were recognized in twenty nine out of those thirty cases which were proved the lesions of the regions of the pharyngo-esophageal junction and the upper part of the esophagus. It was characteristic that in these cases very frequently pharyngeal stasis, asymmetrical deglutition and piece meal deglutition were simultaneously observed. According to above facts, it should be emphasized that when some pharyngeal disorders were recognized, man must always concerned about not only diseases of the pharynx but also the lesions occuring from these regions of the esophagus, particularly such organic diseases as esophageal cancer, esophageal diverticulum or esophagitis.