Recently, I often see inquiries about intestinal obstruction on the Internet. And the inquirers basically have the same problem. That is: the description of the condition is too simple, and the whole process of disease occurrence and development is not informed. Secondly, there is a wrong connection between intestinal adhesions and intestinal obstruction, thinking that intestinal adhesions are intestinal obstruction. Intestinal obstruction is a common disease in surgery. The main manifestations: abdominal distension, abdominal pain, stopping exhaustion and defecation. Intestinal obstruction can be recurrent and improve with proper treatment. In severe cases, improper treatment or delayed treatment can lead to serious consequences. The pathogenic factors can be classified as congenital or acquired factors. Most congenital cases are caused by fetal diseases or early intestinal diseases after birth, and most of these patients develop symptoms and signs soon after birth. Acquired causes are mostly caused by infection from various factors in the abdominal cavity, intestinal malformation, trauma, and post-surgery. Therefore, most intestinal obstruction in adults is due to trauma, infection, and surgery. Past medical history is very important. This will facilitate the doctor’s determination.