Abstract: Diels-Alder (DA) reaction is a kind of ［4+2］ cycloaddition between diene and dienophile. It has become a research hotspot in the self-healing field due to its mild reaction conditions, catalyst useless and unique thermal reversibility. The research progress in self-healing polymer materials was reviewed, with emphasis focused on the DA reaction application. Classified by the chemical structure of the prepared polymers based on DA reaction, the research progress in this field is reviewed and the development of self-healing polymer materials based on DA reaction is prospected.