Colonic Diverticulosis is once thought to be a rare disease in korea compared with western countries, but theincidence has been increasing with passage of time. Authors reviewed 151 cases of colon study with new doublecontrast method performed from November, 1986 to March, 1987 at Paik Hospital Inje college. The results were asfollows: 1. The colonic diverticulosis was found in 39 cases out of 151 colon study (25.8%). 2. ColonicDiverticulosis were located at right and transvercolon in 54% and left and sigmoid colon in 18%. 3. Increasingoccurrence in younger age group predilection: 4th decade was observed.