Electromagnetic riveting can solve the riveting problems of large-diameter and difficult-to-form materials. Compared with pneumatic riveting gun, generally the electromagnetic riveting gun with larger volume was only used for riveting in open structures due to the addition of damping system. Therefore, the development of electromagnetic riveting gun integrated with riveting gun and support iron operated by single person aimed at solving the problem that the application of riveting gun was limited in non-open structures. Firstly, this paper explained the operating principle of electromagnetic riveting, and then introduced the structural design of riveting gun including support iron, clamping system, damping system, and cooling system, as well as analyzed the strength and stiffness of the support iron through finite element simulation analysis. Finally, its riveting ability and the riveting force of titanium-niobium rivet of electromagnetic riveting were both tested. It was concluded that the riveting gun can generate as a Φ4 mm titanium-niobium rivet with good repeatability of header size, and the structural strength of the riveting gun is also safe and reliable.