The utility model provides a high speed motor oil lubricating structure, include the casing and install axle in the casing, install the axle both ends first bearing and second bearing and set up in the first end cover in the first bearing outside with set up in the second end cover in the second bearing outside, be equipped with the oil inlet on the second end cover, the oil inlet with second bearing intercommunication, a fuel feeding passageway has in the axle, the fuel feeding passageway has opposite first end and second end, first end intercommunication extremely first bearing, second end with the oil inlet intercommunication.