Symptoms of left lower abdominal pain of bowel cancer can be intermittent hidden pain, colic and so on, which need to be analyzed with specific circumstances. Bowel cancer in left lower abdomen is colon cancer, which is a common malignant tumor of intestines, and the symptoms of abdominal pain can be intermittent hidden pain; when secondary to intestinal obstruction, persistent pain will be aggravated; and part of the patients can also have paroxysmal colic pain. In addition to abdominal pain, colon cancer may also show changes in stool habit and character, i.e. diarrhea, constipation, or alternating between the two, etc. Patients may also have systemic symptoms such as fever, fatigue, and unexplained emaciation, etc. In a word, once patients have abdominal pain, they may have intermittent hidden pain. In conclusion, patients should consult doctor in time once abdominal discomfort occurs, so as to strive for early detection, early diagnosis, early treatment and better prognosis.