综述了６０年代以来尤其是近１０多年来年龙眼、荔枝和红毛丹花芽及花性分化的内部变化及其与外部因素关系的研究进展，并对龙眼、荔枝和红毛丹的研究现状进行比较，以期能从中得到一些有益的启示 The internal changes of floral buds and floret differentiation of longan, lychee and rambutan in the recent 10 years since the 1960s and their relationship with external factors were reviewed, and the current research status of longan, lychee and rambutan were compared , In order to get some helpful inspiration