ABSTRACT Introduction Maintaining body balance is a prerequisite for good tennis practice. Therefore, the demands of technical movements for competitive playability are achieved only after players have improved balance. Objective Analyze the impacts of balance training on the performance of tennis players. Methods 24 male tennis college students, 18 to 21 years old, were selected and divided into experimental and control groups. The intervention took place under a specific balance training protocol for eight weeks, and data were collected in the experimental group before and after the intervention. Results The test time with eyes closed in unipodal support, Romberg test, eyes closed standing, and walking standing in the experimental group was 37.340 ± 14.382s, 67.250 ± 30.275s, 21.070 ± 7.887s and 4.510 ± 0.540s respectively, showing statistical superiority over the control group. Conclusion After eight weeks of balance training exercise intervention, compared with the subjects without instability training exercise intervention, the subjects’ static and dynamic balance ability after eight weeks of training were significantly improved. Level of Evidence II; Therapeutic studies - investigation of treatment outcomes.