Background and Aims: Tennis is also a sophisticated action, intense confrontation, technical and tactical use of complex and varied network antagonistic sport, on physical and mental intelligence aspects of the higher requirements, emphasizing skills and physical dominance. The purpose of this study is to select 40 male children aged 6-10 years old from a tennis club in Xi'an for a group experiment based on the selection conditions of age, height, weight, training time no more than 6 months, and training twice a week, and to find out the theoretical basis of agility, balance, and coordination intervention training on the improvement of children's tennis hitting ability. Materials and Methods: This study adopts the literature method, expert interview method, experiment method, and mathematical statistics method. Five expert professors were interviewed, and the validity of expert interviews and experimental results was measured by IOC, t-test, and other data. Through 8 weeks of agility, balance, and coordination training in the experimental group and the control group, and 90 minutes of intervention training twice a week, it is concluded that the experimental group and the control group have significant differences, and the experimental group has significantly improved its ability in batting and other aspects. Results: The results showed that: (1) 8-week agility, balance, and coordination intervention training applied in the warm-up part significantly improved the agility, balance, and coordination ability of children's tennis in the experimental group, and the intervention program was feasible to improve the agility, balance and coordination ability of children's tennis students in the interest class. (2) After 8 weeks of agility, balance, and coordination training, the number of goals scored by the students in the experimental group in the scoring area of 1, 2, and 3 points of forehand stroke showed a significant difference compared with before training, while the difference was only significant in the scoring area of 1 point of the backhand stroke. It shows that 8 weeks of agility, balance, and coordination training can improve the stability and accuracy of forehand strokes more obviously. Conclusion: (1) Stability and accuracy are based on good agility, balance, and coordination. Agility, balance, and coordination can improve the accuracy and stability of forehand and backhand in tennis training for children. (2) 6-10 years old is the best period for children to conduct agility, balance, and coordination intervention training, so strengthening agility, balance, and coordination training in tennis warm-up training can not only improve the stability and accuracy of children's tennis shots but also increase children's interest and concentration.