The utility model discloses a specific magnetic resonance imaging device for infants. The device comprises a magnetic resonance imager, a filter board (20), a control device and a display system, wherein the magnetic resonance imager consists of a superconducting magnet (1), a radio frequency system (2), a gradient system (7) and a patient support system (3); the superconducting magnet (1) comprises a superconducting magnetic field coil (5), an active and passive shimming system (6) and a refrigeration system (4); diameters of inner walls of the superconducting magnetic field coil (5), the active and passive shimming system (6) and the gradient system (7) are decreased in order; and the refrigeration system is a stage refrigeration circulating system. By adopting the structure, the magnetic field is homogenized, temperature in the magnet changes gently due to spatial orientation of the magnetic resonance imaging system signals and a two-stage refrigeration circulating system, and the environment is stable.