Clinical features and diagnosis of Behcet's disease were presented based on Z8 Chinese patients. It was found thtt uveitis,recurrent oral aphthae,multiform skin lesions and genital ulcer occurred in 100%,96.43%,96.43%and 53.57% respectively of the patients.The Uveitis with recurrent feature,frequently accompanied by retinal vasculitis,was at great risk of developing blindness.It was pointed that the knowledge about the features of both ocular and extraocular manifestations was the key to making a correct diagnosis. （Chin J Ocul Fundus Dis,1994,10:133-137）