The purpose of this study was to clarify the effect of continuous dribbling training on the dribbling movement mode and game performance of junior youth soccer players. The subjects were 32 junior high school soccer players: 17 in the training group, and 15 in the control group. Both groups did 2 hours of training 3 times a week for 16 months. The training group performed dribbling training while the control group performed agility and pass & control training for the first 40 minutes. The dribbling tests, motion filming and 11 vs 11 games with the third group were carried out before each group's training, after 3 months, 6 months, 10 months, and 16 months. The results showed that time in the dribbling test was decreased to a greater degree in the training group than in the control group. With zigzag dribbling, time showed a greater decrease only in the training group as training progressed. For double scissors feinting, the time in double scissors showed a greater decrease in the training group than in the control group. This was because the standard deviation of body axis inclination decreased in a crosswise direction in the YZ plane in the training group. Furthermore, the center of gravity velocity at ball carrying showed a significant increase only in the training group as training progressed. This was because the knee joint angle of the supporting leg decreased at the moment of ball touch, and the knee joint angular velocity of the supporting leg increased upon lifting from the ground in the training group. With double touch feinting, the ball velocity and center of gravity velocity showed greater increase in the training group than in the control group. This was because the knee joint angle of the supporting leg decreased at the moment of ball touch, and the knee joint angular velocity of the supporting leg increased upon lifting from the ground in the training group. With regard to game performance, the success rate in dribbling was significantly improved only in the training group. The success rate in passing showed a decrease in both groups after 3 months, but was significantly increased only in the training group. Consequently, this study clarified that continuous dribbling training intended for junior high school soccer players decreased the time in the dribbling test and changed the dribbling movement mode, thus improving dribbling skill. It is suggested that this improvement will contribute to enhancement of game performance in terms of dribbling and passing.