There are no benign small round cell tumors identified; most small round cell tumors occur in the abdominal cavity and also show disseminated growth and are highly malignant. Small round cell tumor is a malignant tumor that refers to a type of malignant tumor that is not readily distinguishable under light microscopy, whose exact tissue origin cannot be discerned, and whose external morphology resembles that of small round cells. Small round cell tumors have been clearly defined only in the last decade and are characterized by invasion along the plasma membrane tissue as well as showing disseminated growth. The main incidence of small round cell tumors is in males, with a male-to-female ratio of 4:1. The average age is young, between 18 and 25 years old, and most of the tumors develop in the abdominal cavity, manifesting as a painful mass in the abdomen. At present, the main treatment for small round cell tumor is surgical treatment supplemented by postoperative radiation therapy, with poor efficacy and high recurrence rate. If you have similar symptoms, you should go to the hospital in time to receive treatment.