skill: vertical jump, spiking speed and spiking direction. The purpose of this study was to investigate the effect of plyometric training on spiking skill. The study employed Experimental research design.24 male U-19 volleyball project players of Debre-tabor with the age of (EG=17.58±0.515, CG= 17.25±0.452) had divided randomly into 2 equal groups. Both the training group (EG, n = 12) and control group (CG, n = 12) participated in three day per week the regular volleyball training, but only EG participated in additional 2 sessions per week of 60 minutes per session of plyometric training, which comprised as squat jump, tuck jump, lateral jump, power skipping, plyometric push-up, medicine ball throwing, depth vertical jump and broad jump. Both groups had taken pre and post-test and all the subjects participated in spiking skill variable tests: vertical jump/ hit height was measured using vertex test, spike speed was measured using radar test and spiking direction was measured using observation/scouting. The data collected from the study subject was analyzed using SPSS version 23 software by paired t-test with level of significant 0.05. The results showed plyometric training significantly improved spiking skill: vertical jump/hit height, spiking speed, and spiking direction in EG at (p<0.05). Furthermore, no significant differences were found in all of the variables in CG (p>0.05). Based on this finding, it can be concluded that twelve weeks plyometric training has positive effect on improvement of spiking skill: vertical jump/hit height, spiking speed, and spiking direction variables. Key words: Plyometric, radar, scouting, spiking and vertex