In order to deal with the sensitive damage failure of heavy equipment in severe service environment for a long time, it is urgent to develop new engineering materials with outstanding performance. High-entropy metallic glasses (denoted as HE-MGs) is a new type of structural and functional material that has attracted much attention from scholars in recent years. With the special composition design concept, it takes into account the structural advantages of traditional amorphous alloys and the excellent comprehensive performance of high-entropy alloys. Although HE-MGs are barely 10 years old, its related research and exploration have made considerable headway. In view of the above-mentioned facts, the related concepts and evolution process are recapitulated. Herein, the factors affecting the phase stabilities of high entropy alloys and the rules of phase selection are summarized. In the meantime, the existing HE-MGs composition patterns and main characteristics and properties are concluded. The latest research progress on the room-temperature mechanical properties, serrated flow behavior, friction and wear properties as well as thermal stability are summarized. In the end, the research trend and application prospect of HE-MGs are put forward.