Abstract: Chondrosarcoma is a common clinical malignant tumor, of which about 10% chondrosarcoma occurs in the soft tissue outside bone, the deep soft tissue or muscle of the limbs, shoulder and buttocks are the commonly occurring sites, and the occurrence of chondrosarcoma is less in the iliac fossa. In this paper, a case of extraskeletal chondrosarcoma of left iliac fossa was reported to summarize its clinical and imaging manifestations, treatment and prognosis.