Malignant mucinous fibrosarcoma is more serious. As malignant mucinous fibrosarcoma is a kind of malignant tumor of mesenchymal tissues, the tumor shows infiltrative growth, which can be accompanied by hemorrhage and necrosis, and can be accompanied by hemorrhagic metastasis as the main tumor dissemination, which can be transferred to all kinds of tissues and organs in the whole body; and it can be classified into low malignancy and high malignancy. Tumors are most commonly found in limbs and trunk, and a few can be seen in head and neck and retroperitoneum, etc.; they can cause symptoms of pain, irritation, and oppression in corresponding tissues and organs. Symptoms such as abdominal pain, blood in the stool, cough, and dyspnea may be present, as well as signs such as a slowly enlarging painless mass. Early mucinous fibrosarcoma can be treated by standardized treatment, expanded surgical resection, postoperative adjuvant chemotherapy and other means of some patients can survive for a long time; advanced malignant mucinous fibrosarcoma, rapid development of lesions, liver, lung and intestinal metastasis can occur, through systemic chemotherapy, some patients can be relieved, but the prognosis is worse, and the condition is serious. The severity of mucinous fibrosarcoma depends on the stage of the disease, the extent of tumor invasion, the availability of standardized treatment and other related factors. If you find mucinous fibrosarcoma, it is recommended to go to the hospital in time to give targeted treatment or therapy.