Based on studies of automatic sequencing and supplying of grafting clips, the mechanical model of clips in disc-shaped vibratory feeder was established. The conditions of clip bouncing and sliding in delivering were determined. When disc acceleration a2 was larger than 2.37g, clips began to bounce. When a1l was 0.47g,a2l was 0.41g, perfect state continuous sliding of clips could be achieved. The device included disc-shaped vibratory feeder and automatic clip-delivering mechanism. The disc was controlled by the adoption of anticlockwise clip-delivering and frequency adjustment. The automatic clip-delivering mechanism was driven by cylinder. Experiments showed that when vibration frequency was 48Hz, the angle of slideway was 45°, clip-pushing pressure was 0.4MPa, delivering speed was 60 clips per minute, and success average of clipping was 96%, which could meet the need of the type TJ—800 grafting machine.