Constructing the core collection of fruit germplasm by using the existing basic information,identification and evaluation data has become another new research area of fruit germplasm resources after the preservation,identification and evaluation.According to the connotation and development of core collection,the main characteristics of the core collection of fruit trees were proposed and its main research contents,methods and procedures were presented.By analyzing the special natures of constructing core collection of fruit germplasm,its main problems and further research directions were discussed in detail.