报告小儿滑膜软骨瘤病４例。其特点：病变多为Ｍｉｇｒｍ分期的第Ｉ期或第Ⅱ期初；关节弹响及交锁症状少见；Ｘ线平片上可以无典型的骨化、钙化影；关节穿刺液多为棕黄色关节液。手术仅局限于切除手术野能涉及的病变滑膜。该病有自愈倾向，预后良好。 Report of children with synovial chondromatosis in 4 cases. Its characteristics: lesions are mostly Migrm staging of the first phase or the beginning of the second period; joint snapping and interlocking symptoms rare; X-ray can be typical of ossification, calcification; joint puncture fluid mostly brown synovial fluid. Surgery is limited to surgical synovial lesions that can be involved in resection of the surgical field. The disease has a tendency to self-healing, the prognosis is good.