Six cases of diverticulosis of the small intestine are reported in this paper. Described in some detail is the pathological pattern of diverticula in jejunum and ileum. There are chronic courses with recurrent complaints in the epigastric region and with malabsorption syndrome which may lead to megaloblastic anaemia, steatorrhoea, and dermatosis. Acute processes are caused by perforation, diverticulitis, and haemorrhage. Ileus can develop owing to strangulation or, in less frequent cases, owing to incarceration of enteroliths. Chronic pneumoperitoneum may be attributable to massive jejunal diverticulosis.