Dog-1 positive may be gastrointestinal mesenchymal tumors. dog-1 is clinically used to detect gastrointestinal mesenchymal tumors, dog-1 is a kind of protein whose function is not completely clear, but according to the research shows that it can be selectively expressed in gastrointestinal mesenchymal tumors, so it plays an auxiliary role in the diagnosis of the disease examination, and the specific results should be confirmed according to other tests. Gastrointestinal mesenchymal tumors occur in the digestive tract, the most common parts of the stomach and small intestine, usually no symptoms in the early stage, with the development of the disease may appear abdominal pain and bloating, abdominal masses or may occur vomiting blood and black stools and other symptoms. Doctors will decide the treatment according to the size of the tumor and whether there is any metastasis. It is recommended that the patient should pay attention to rest after the operation, develop a good habit of rest and relaxation, and do appropriate exercise to enhance the physical fitness. Diet should be light and easy to digest.