An electric vehicle comprising: a frame structure including a pair of right and left side members (31, 32) made of metal, arranged at a lower part of a vehicle body; a floor panel made of metal provided on the frame structure; a battery unit including a battery case arranged between the pair of side members (31, 32) on the undersurface side of the floor panel, the battery case containing therein battery modules and electric components electrically connected to the battery modules, and the upper side of the electric components being electromagnetically shielded by the floor panel; characterized by comprising a front electromagnetic shield portion arranged on the vehicle-front side with respect to the electric components, the front electromagnetic shield portion comprising an insert member made of metal plate embedded in the resin constituting the battery case; a rear electromagnetic shield portion arranged on the vehicle-rear side with respect to the electric components, the rear electromagnetic shield portion comprising an insert member made of metal plate embedded in the resin constituting the battery case; and an under electromagnetic shield portion arranged on the undersurface side of the battery case, the under electromagnetic shield portion comprising beam members (101, 102, 103, 104) made of metal, extending in the width direction of the vehicle body along the undersurface of the battery case, further comprising joining portions (121, 123), (125, 127) provided on one end of the beam members (101, 102, 103, 104) and fixed to one side member and the insert member and other joining portions (122, 124), (126, 128) provided on another end of the beam members (101, 102, 103, 104) and fixed to another side member and the insert member. a frame structure including a pair of right and left side members (31, 32) made of metal, arranged at a lower part of a vehicle body; a floor panel made of metal provided on the frame structure; a battery unit including a battery case arranged between the pair of side members (31, 32) on the undersurface side of the floor panel, the battery case containing therein battery modules and electric components electrically connected to the battery modules, and the upper side of the electric components being electromagnetically shielded by the floor panel; characterized by comprising a front electromagnetic shield portion arranged on the vehicle-front side with respect to the electric components, the front electromagnetic shield portion comprising an insert member made of metal plate embedded in the resin constituting the battery case; a rear electromagnetic shield portion arranged on the vehicle-rear side with respect to the electric components, the rear electromagnetic shield portion comprising an insert member made of metal plate embedded in the resin constituting the battery case; and an under electromagnetic shield portion arranged on the undersurface side of the battery case, the under electromagnetic shield portion comprising beam members (101, 102, 103, 104) made of metal, extending in the width direction of the vehicle body along the undersurface of the battery case, further comprising joining portions (121, 123), (125, 127) provided on one end of the beam members (101, 102, 103, 104) and fixed to one side member and the insert member and other joining portions (122, 124), (126, 128) provided on another end of the beam members (101, 102, 103, 104) and fixed to another side member and the insert member.