A magnetic resonance imaging device (1) is provided with external cover support members (13) in a layer (11) between an external cover (10) and a static magnetic field generating means (3b) in order to mitigate the occurrence of noise due to vibration of the external cover (10). The external cover support members (13) are provided at a position (12a, 12b), or both positions, where a point (a) which is on a straight line (m) connecting the centers of two connecting pillars (6a, 6b) and is on an opening portion (3d) of the connecting pillar (6a) side is rotated 55-75˚ or 110-130˚ along the surface of the opening portion (3d).
