The rapid development of industry leads an increase in solid waste production year by year, and the environmental and resource issues it brings cannot be ignored. Using industrial solid waste in the form of glass-ceramics is one of the important ways of solid waste resource utilization. At the same time, this method can also reduce environmental damage by solidifying heavy metals. Based on the sources and characteristics of stainless steel slag, the common methods of harmless treatment of stainless steel slag are compared and analyzed. In view of the harmless treatment and resource utilization of stainless steel slag, this paper focuses on the influences of main components on the structure and properties of glass-ceramics in the process of preparing glass-ceramics materials from stainless steel slag. In addition, based on the research status of solidification of heavy metals by glass-ceramics, the harmless treatment of Cr, Ni and Mn in stainless steel slag cured by glass-ceramics is analyzed and discussed. Finally, the future research directions of harmless treatment and resource utilization of stainless steel slag are prospected.