Jejunal diverticulosis is a rare disorder and the course of the disease is mostly asymptomatic. A surgeon meets the patients only in the acute phase of the disease, when the disease symptoms most commonly include bleeding and perforation. Jejunum is difficult to examine using the common visaulization methods and endoscopic methods, therefore, the diagnostics of the disease is difficult and the disease may often mask other disorders. The authors present two case reviews of patients operated for perforation and bleeding from jejunal diverticles.