1. School of Resources and Materials，Northeastern University at Qinhuangdao，Qinhuangdao 066004，China
2. State Key Laboratory of Rolling and Automation，Northeastern University，Shenyang 110819，China
3. Qinhuangdao Daotian High Technology Co.，Ltd.，Qinhuangdao 066000，China
4. School of Control Engineering，Northeastern University at Qinhuangdao Qinhuangdao 066004，China
5. School of Materials Science and Engineering，Tianjin University，Tianjin 300354，China
The strengthening mechanism of traditional cobaltbased superalloys is solid solution strengthening and carbide strengthening whereas, both solid solution strengthening and carbide strengthening are weaker than that of nickel-based superalloys with ordered γ′ precipitation. Japanese scholars discovered a novel type of Co-Al-W superalloys with ordered γ′ phase strengthening, and its strengthening effect is significantly better than that of traditional cobalt-based superalloys. Compared with traditional nickel-based superalloys, the novel cobalt-based superalloys have higher temperature capability, more excellent high temperature creep resistance and oxidation resistance, therefore, the novel cobalt-based superalloys are considered to be the most potential aeroengines hot side materials and have developed rapidly in recent years. In this review, based on the research results of the novel cobalt-based superalloys by scholars at home and abroad, the effects of various alloying elements (such as Ta, Ti, W, Nb and so on) on the structure and properties of novel cobaltbased superalloys were systematically summarized. In terms of microstructure, the effects of alloying elements on transformation temperature, volume fraction and morphology of γ′ phase, the size of γ′ phase, the lattice misfit of γ/γ′ two phase and the harmful phase were summarized. Meanwhile, in terms of properties, the effects of alloying elements on oxidation resistance, mechanical property and creep resistance of the alloy were also discussed, it is expected to provide reference for the composition design of novel cobalt-based superalloys. Finally, the high efficiency design of novel cobalt-based superalloys are prospected.