【Objective】Variety improvement of Heiye litchi by top grafting was conducted to provide the best scion combination for litchi quality improvement and growth period adjustment in Guangxi. 【Method】Heavily retroactive pruned13 years old Heiye Litchi tree,12 litchi varieties such as Feizixiao, Guifeihong and Caomeili were top grafting.Survival rate, growth and yield after top grafting were compared and analyzed. 【Result】The results showed that the highest rate of graft living was Feizixiao(86.6%),then Guihuaxiang(74.6%)and Guifeihong(71.3%),and the lowest wasYingshanhong(17.1%)and Jizhuili(26.1%). Guiwei,Wuheli,Qinzhouhongli and Heli appear swelled in grafting position, grew weakly with yellow leaf blade and had no yield. Eight varieties, Guifeihong, Caomeili, Guinuo,Yingshanhong,Jizuili,Feizixiao and Mili, grew and produced fruit normally. The average yield per plant grafting after 4 years was around 15.0 to 49.5 kg. The highest was Feizixiao(49.5 kg)and the yield of Guifeihong was 40.6 kg.【Conclusion】With Guiluo, Yingshanhong, Guihuaxiang and Mili as scion grafted onto the intermediate stock ofHeiye,the affinity is good, hence they are the optimal scion combination.