Abstract: To explore the effects of root confinement on the chlorophyll content and leaf dry weight of young fruiting nectarine tree in greenhouse, tree were trained to central leaders and planted at in-row spacing of 1m with 1.5m between rows. When planting, different ways of root restriction were performed as: trees set in holes large enough to accommodate the root system(CK) and planting using nylon membranes(TR1) and using non-woven synthetic fabric(standard 0.5Kg/m2, thick 0.20mm)(TR2). The results showed that (1) in autumn chlorophyll (Chl) contents of different positioned leaves exhibited a common “up-down-up” temporal pattern in all trees treated by different root confinement. When different ways of root confinement compared, Chl contents per leaf area in TR2 were always lower than those of the same positioned leaves in TR1 and CK, but the Chl contents in TR1 were larger than all in CK except those of the 1st and 8th positioned leaves. (2)Chla and total Chl and the ratio of Chla to Chlb all presented a dynamic variation pattern of “down-up-down” during 19DAA (days after anthesis)～262DAA (actually Mar.29～Nov.28) in all root treatments, and it was revealed that the seasonal change of Chlb was obviously affected by different ways of root confinement. (3)The seasonal change of LWA (leaf weight area) during leaf development was very distinct among different root treatments, but all showed an ascending tendency. And the seasonal change of the content of dry weight presented a descending tendency in all treatments, but the temporal variation was distinct among different root treatments.