Abstract: On April 2, 2017, scions of 1-year Carya cathayensis branch were collected in Lin’an, Zhejiang province, and were grafted on rootstocks of 2-year C.illinoensis and C.hunanensis seedlings.The results showed that survival rate of seedlings grafted on C.illinoensis and C.hunanensis topped 90.45% and 92.66%, while that on C.cathayensis had only 76.34%.Shoot growth, internode length and compound leaves of seedlings grafted on C.hunanensis had the best result, respectively 70.40cm, 6.78cm and 10.60 blades, and that grafted on C.cathayensis had the last effect.Chlorophyll a and b content and carotenoid content in fresh leaves of seedlings grafted on C.hunanensis topped 1.406mg·g-1, 3.951mg/g and 1.143 mg·g-1.Microexamination on sections from grafting part demonstrated that unit area vessel numbers in callus tissue of seedling grafted on C.hunanensis had 124.8, that on C.illinoensis had 94.8 and that on C.cathayensis had only 62.