Abstract: The article reviewed the self-incompatibility in stone fruit trees such as sweet cherry, apricot, almond and japanese apricot. Furthermore it summarized the S-RNase genes (S genes) and the SLF genes(S-locus F-box genes or SFB genes), inheritance of the S genes, breeding of selfcompatible cultivars, the main methods of identifying the S genotypes and the possible mechanisms of self-compatibility.