<p>Austenitic stainless steel is highly susceptible to solidification cracking during welding, which seriously affects the quality and safety of austenitic stainless steel welded joints. Solidification cracks mainly appear in the mushy zone behind the molten pool at the end of solidification during welding. The factors influencing solidification cracks mainly come from metallurgy and mechanics. This paper summarized and reviewed the formation mechanism of solidification cracks during welding austenitic stainless steel. The models of solidification crack and criteria for evaluating the susceptibility of austenitic stainless steel was also reviewed in detail. In addition, the research progress in the crack susceptibility test methods, controlling factors and strategies of austenitic stainless steel was also analyzed. The future research direction in this significant topic was also proposed. Enhanced understanding of solidification cracking phenomena offers an opportunity to improve cracking resistance and high-quality welding of austenitic stainless steels.</p>