Opsoclonus-myoclonus syndrome(OMS)is a rare neurological syndrome associated with tumors,which is more common in children than in adults.It is characterized by involuntary,arrhythmic,chaotic,multidirectional sac-cades,usually accompanied by limb and trunk myoclonic seizures and ataxia.Case reports are even rare on OMS compli-cated by autoimmune encephalitis with overlapping antibodies against the alpha-amino-3-hydroxy-5-methyl-4-isoxazolepro-pionic acid receptor(AMPAR)and N-methyl-D-aspartate receptor(NMDAR),and its clinical manifestations and treat-ment are poorly understood.We report a case of autoimmune encephalitis with OMS positive for both NMDAR and AMPAR antibodies,and also review relevant literature to help improve the understanding of the condition.