Abstract: The biological features on growth and fruiting of six pistachio cultivars from the US and Xinjiang of China were studied. Results show that Kerman and 26-18^# cultivars can bear nuts after grafted three-year old at Taian, Shandong. Affinity is vary strong between Pistacia vera and Pistacia chinensis about fifty-year old, survival tree rate and survival scion rate of pistachio cultivars grafted are 70%-100%, but there are dying buds (shoots) after 20 May grafted. Growth rhythm appears S-type to leaf and shoot of pistachio cultivars, leaf area index (LAI) mean is 3.98. Three-year old after grafting, there are thirty-one spikes on maximum growing scion and 88.5-116 nuts on each spike, and nuts and kernels develop very well. Each fruit wt. is about 0.81-1.89 g, stone/fruit and kernel/stone are 54.3%-55.0% and 48.1%-59.1%,respectively. Biological features of growth and fruiting on pistachio cultivars are discussed in this paper.