(1) Superconducting magnets have no Joule heat loss during stable operation, which is particularly prominent for magnets that need to obtain a strong DC magnetic field in a larger space. This can save a lot of energy, and the required excitation power is very small, and there is no need for large water supply and purification equipment like conventional magnets. Large superconducting magnets have been used as core components in nuclear physics and high-energy physics research. The significance of High-temperature superconductivity magnets in this respect is more obvious.

(2) Superconducting materials can have a high current density, resulting in small volume and light weight of superconducting magnets. They can also easily meet special requirements for high uniformity or high magnetic field gradients.

(3) If a superconducting switch is connected in parallel to operate the superconducting magnet in a continuous current state, an extremely stable magnetic field can be obtained, and in principle, no additional electrical energy is needed, avoiding the need for ordinary magnets to consume a large amount of electrical energy every moment.

(4) The production and use of small superconducting magnets are very convenient, and small and medium-sized superconducting magnets have become basic equipment in many laboratories