Tumors outside the stomach can not be judged by experience whether it is benign or malignant, both cases are possible, it is recommended to go to a professional hospital for examination, under the guidance of the doctor to clarify the diagnosis. 1. Benign tumors: such as gastric smooth muscle tumor, gastric lipoma, gastrointestinal vascular tumors, etc. Benign tumors usually have the characteristics of slower growth rate, clearer boundary, complete envelope, etc., and usually will not spread or metastasize, which will not affect the survival of patients. Patients should take active treatment and regular review, and at the same time, they should follow the doctor’s instruction to do daily health care to prevent the tumor from growing again. 2. Malignant tumors: such as gastric mesenchymal tumors, malignant tumors usually have the characteristics of fast growth, unclear boundary, incomplete periphery, and non-smooth surface; most of them will be manifested as ulcers, cauliflower-like with bleeding and secretion, accompanied by metastasis and enlargement of peripheral lymph nodes, which will affect the survival of patients. Patients need to consult the doctor in time, actively cooperate with the doctor’s examination and treatment, and review regularly. Therefore, after discovering the tumor outside the stomach, you need to go to a professional hospital as soon as possible, through ultrasound, CT, MRI, gastroscopy and other related examinations, to clarify the nature of the tumor, and follow the doctor’s instructions to actively carry out the treatment, so as to avoid causing greater harm to the body.