<p>In recent years, the automobile industry has witnessed a growing demand for mass production of advanced high-strength steels (AHSSs). However, the formation of liquid metal embrittlement (LME) during resistance spot welding faces severe challenges to the development and applications of the AHSSs. To break this bottleneck, the mechanism of LME has been comprehensively investigated and explored. In the present study, the influence of Cr addition on the LME susceptibility was analyzed, which aimed to explore the intrinsic mechanism of the LME formation in the galvanized AHSSs. The results showed that the Cr-added specimens revealed low LME susceptibility. The decarburization layer was formed and its depth was different because of the various steel compositions. The microstructure of the steels after elemental modification remained stable, which was indicated by the microhardness on the cross section of the welded joints. Furthermore, the interaction between the Zn and Cr atoms along the grain boundaries was analyzed in the process of the initiation and propagation of LME. It was deemed that the segregation of Cr atoms along the grain boundaries and the resultant repulsive force between the Cr and Zn atoms could inhibit the penetration of the liquid Zn and therefore decrease the LME susceptibility in the galvanized AHSSs. </p> Graphical Abstract <p></p>