The research aims to make a statistical approach to the causes of mechanical intestinal obstruction by its incidence and demonstrating the importance of early diagnosis in improving the outcome of management. The study included 287 adults patient admitted in the department of surgery at ALASSAD University Hospital in Lattakia, due to mechanical intestinal obstruction, from the beginning of January 2010 until the end of August 2015.186 of patients were males and 101 were females. The obstruction was in the small bowel at 253 patients, while there were 34 cases in the large bowel. The patients ages were between 21-88 years and almost half of the patients were in their third and fourth decades of life. The most important symptom was stopping the release of gas and feces and was found in 86.7% of cases. The abdomen X-ray was the most diagnostic procedure we used, it was done for 98% of patients. Adhesions were the most common cause of intestinal obstruction (73.51%), it followed by hernias (12.19%), tumors (6.28%), while the rest of the reasons like volvulus, intussusception, Crohn's disease and diverticulitis were amounted (8%) of patients.