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Magnets play an import role in cyclotrons. Application of superconducting magnets can make the cyclotron more compact, magnet field higher, and operation cost lower. From 1982 the first external beam was extracted from the K500 cyclotron at MSU, cyclotrons based on superconducting magnets became a popular research field in science, research, medicine and so on. Especially in recent years superconducting cyclotrons is increasing number in heavy iron therapy application, and they are an easy and cheap way to get ion beams. As a superconducting magnet besides the electromagnetic design to meet the beam transport requirement, there are many special engineering design points, including mechanical, cooling, stability, safety, measurement and so on. To fabricate the superconducting magnet, especially those with specially winding shape and configuration, need to study the process including winding, resin vacuum pressure impregnation, superconductor welding joint, assembling and so on.This report describes the engineering design technology, key fabricate technology, and some special equipment developed for superconducting magnets, including NbTi, NbSn3 and YBCO magnets. Some projects finished and carrying on in Bama Superconductive Tech Co. are also presented in this report, these projects are mainly related to cyclotron, synchrocyclotrons, FFAG accelerators, medical accelerators and so on.
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