Magnetic resonance superconducting magnet cooling device

The utility model relates to the technical field of superconducting magnet cooling, in particular to a magnetic resonance superconducting magnet cooling device. A magnetic resonance superconducting magnet cooling device comprises a single-stage GM refrigerating machine, a double-stage GM refrigerating machine, a low-temperature heat exchanger, a temperature acquisition system and a 50K magnet cold shield, and is characterized in that one side of the 50K magnet cold shield is connected with a cold head container through copper heat, and the double-stage GM refrigerating machine is arranged in the cold head container; a neck pipe is arranged on the 50K magnet cold shield located on one side of the two-stage GM refrigerating machine, a single-stage GM refrigerating machine is arranged in the neck pipe, and the bottom of the single-stage GM refrigerating machine is connected with a first low-temperature heat exchanger. And the bottom of the two-stage GM refrigerating machine passes through a second low-temperatur