An electric motor comprising a housing, a stator which is fastened to the housing, a rotor which is arranged at an inside of the stator, a bearing which is attached to the housing to support a shaft of the rotor, a shield member which is attached to the bearing to prevent scattering of lubricant enclosed in the bearing, and a scatter preventing member which extends from the housing so as to be positioned between the bearing and an iron core of the rotor, and prevents scattering of component parts of the bearing to the inside of the housing.