A gastric mesenchymal tumor is a mesenchymal tumor that occurs in the sinus area of the stomach. The full name of gastric mesenchymal tumors is called gastrointestinal mesenchymal tumors, which are tumors that originate in the mesenchymal tissue of the gastrointestinal tract. Common tumors of the mesenchymal tissue of the stomach include gastrointestinal mesenchymal tumors, nerve sheath tumors, and smooth muscle tumors, with gastrointestinal mesenchymal tumors being the most common. Their etiology is not well understood. The risk of gastrointestinal mesenchymal tumors is determined by the size of the tumor and the number of pathologic nuclear schizophrenic elephants; the larger the tumor and the more nuclear schizophrenic elephants the higher the risk, i.e., the higher the degree of malignancy, and vice versa, the lower the risk. When gastrointestinal mesenchymal tumors are relatively small, patients usually have no obvious symptoms. As the tumor grows larger, symptoms such as dyspepsia, black stools, and vomiting of blood may occur. When the tumor is large, a mass may be palpable in the abdomen. Gastrointestinal mesenchymal tumors are treated accordingly based on clinical examination. If the tumor is relatively small, not more than 2 cm, and there are no obvious symptoms is no need for treatment, regular review can be. If the tumor exceeds 2 cm, endoscopic or laparoscopic surgery is needed, and after surgery, according to the risk level, whether to apply the targeted drug Gleevec for treatment should be chosen. Once the gastric sinus mesenchymal tumor occurs, should actively cooperate with the doctor for treatment, regular review.