A dual card connector includes a holder and a base body. The holder defines two overlapped sliding slots for receiving cards, each sliding slot includes a group of conductive terminal assemblies, the holder includes a plurality of elastic pieces, the elastic pieces are connected to the conductive terminal assemblies. The base body includes at least two groups of connecting terminals. The holder is detachably mounted to the base body, thus the elastic pieces are resisted and electrically connected to the connecting terminals. An electronic device employing the dual card connector is also disclosed.