Spindle smooth muscle sarcoma is a malignant mesenchymal tissue tumor that is easy to recur, which may be related to the unchanged environment of cancer body, incomplete treatment and low autoimmunity. 1. Cancer body environment has not been changed: the reason why patients with spindle-shaped smooth muscle sarcoma get sick is related to their physique. If the physique remains unchanged after killing the cancer cells by various methods, new cancer cells will be produced. 2. Incomplete treatment: through surgery, cancer cells cannot be killed completely, even radiotherapy is needed to kill the cancer cells, but if it is not treated in time, it is likely to recur. 3. Low autoimmunity: chemotherapy is a kind of treatment for cancer. Chemotherapy can not only kill the cancer cells, but also kill the normal cells, so that the patient’s immunity will be lowered, and if you want to prevent the recurrence of cancer, you have to enhance the immunity, restore the immune system, and restore the body’s regulating ability after the treatment. Therefore, patients with spindle smooth muscle sarcoma must have regular checkups to avoid the adverse effects of the disease, and should go to the hospital in time to consult the physician’s guidance if they have any uncomfortable symptoms.