To increase the working efficiency of full automatic grafting machines for whole - row vegetable seedlings in a cell tray, the field of automatic feeding of grafting clips was studied and a grafting-clip transporting mechanism was presented. In a working cycle, this mechanism could transport five grafting clips and clamp whole-row grafting seedlings synchronously. There were three parts in a grafting-clip transporting mechanism, including an automatic grafting-clip sorting and feeding mechanism, a grafting-clip transporting platform and a linear motion mechanism. In the mechanism, automatic orientation and sorting of grafting clips were realized by a vibration device and automatic feeding was driven by a cylinder; automatic transporting of five grafting clips was achieved by a linear motion mechanism which was driven by a stepping motor; cylinders and pneumatic grippers were applied to drive and control the grafting-clip opening to clamp five grafting seedlings synchronously. The experimental study on the mechanism was completed and relative performance parameters were confirmed. The experimental results indicated that the time spent on a working cycle of the grafting-clip transporting mechanism was about 12.5s, the success rate of grafting-clip feeding could reach 94.7%, and the success rate of grafting-seedling clamping was 92%. Consequently, the grafting-clip transporting mechanism could meet the requirements of the technology of whole-row grafting; the research results laid a solid foundation for the further study on full automatic grafting machines for whole-row vegetable seedlings in a cell tray.