Marcus-Gunn氐综合征国内报道不多,有家族史者罕见。笔者无意中发现一例,报告如下: 患儿男,9岁。出生后哺乳时发现右眼睑不断开阖。啼哭、张口运动或咀嚼时右上睑反复向上开大。从未就诊,笔者偶然发现。母孕时体健,足月、剖腹产,第一胎发出生体重约3500g。无癫痫史。父母非近亲婚配,均无先天畸形。其父及外祖父家族中 Marcus-Gunn 氐 syndrome rarely reported in the country, family history is rare. I accidentally found a case, the report is as follows: Children male, 9 years old. Breastfeeding after birth found that the right eyelid keeps opening and closing. Crying, open mouth movement or chewing right upper eyelid repeatedly open up large. Never visited, I accidentally found. Mother’s body when healthy, full-term, caesarean section, the first birth weight about 3500g. No history of epilepsy. Parents non-relatives marriage, no congenital malformations. His father and grandfather’s family