The magnetic material of the jacket insulation magnetic pump is made of strong magnetic and high temperature resistant materials to ensure sufficient magnetic transmission torque. The isolation sleeve is designed with an uneven cross-section structure, reducing eddy current losses by 12 for higher cross-section cylindrical isolation; The use of a uniquely designed new insulation box structure ensures that the medium will not condense during transportation. At the same time, when the temperature is too high, cooling water can be introduced into the insulation box to carry away excess heat, effectively ensuring the normal operation of the motor and magnet. The use of fluid dynamic lubrication bearings and a new insulation structure ensure that the medium will not crystallize during operation.