The left abdomen seems to be a tendon pain may be intestinal obstruction, endometriosis, etc., need to analyze specific symptoms. Patients with intestinal obstruction, due to some certain irritating factors such as after abdominal surgery, intestinal adhesions, so that the intestinal contents through the intestinal tract obstacles, the phenomenon of obstruction, manifested as abdominal pain, vomiting, abdominal distension, stopping defecation, defecation and so on. The patient should seek medical attention and timely surgical treatment. Endometriosis refers to the planting of endometrial cells in locations other than the endometrium such as the pelvis, etc. Fibrosis of tissues around the ectopic endometrial site may appear as ectopic nodules, which mainly manifest as dysmenorrhea, chronic pelvic pain, menstrual abnormalities and infertility. It should be treated with medication or surgery under the guidance of a doctor. The left abdomen seems to be a tendon pain should be timely medical care, clear diagnosis, so as not to delay the condition.