Gastric submucosal masses are tumors originating from the mesenchymal tissues and can be benign or malignant. Benign masses such as gastric mesenchymal tumors, gastric smooth muscle tumors, and lipomas are not serious diseases. However, malignant tumors are more serious if pathological and histological examinations show that they are malignant. 1. Benign mass: 1.5cm of submucosal gastric mass found through pathological biopsy is a benign tumor, which is not a serious phenomenon, and it can be removed through surgery with regular postoperative checkups and a light diet. Generally speaking, submucosal gastric tumor is benign. 2. Malignant mass: if there is malignant tumor tissue through pathological biopsy, it will be more serious, and infiltration and metastasis can occur in the early stage, so it is necessary to judge whether there are lymph nodes and other organs metastasis, so as to choose the appropriate treatment plan. If the above situation occurs, it is recommended to go to the hospital in time and follow the doctor’s instructions for active treatment.