Embryo of‘Jinguang’plum was used as materials and 13 sampling dates from pollination to maturation were adopted to study the best date of embryo rescue,using embryonic age and fruit volume for measurement index.The results showed that the best time of embryo rescue was 49 days after pollination.In this period,endosperms began to degeneration,young embryo abnormality and the stone lignifications began.Fruit volume reached 77.9 % of the total volume,and this time was the transition of the first slow growth period and the second fast growth period.