Leg explosive strength is intimately associated with the ability to change direction. Basketball players frequently complete sprinting, decelerating and changing direction movements on the court, and leg explosive strength is a prerequisite for completing high-intensity explosive movements. Athletes' agility relies on single-leg power in the vertical and horizontal directions to adjust the body to complete braking and deceleration, support transition, and re-acceleration, and the content of unilateral super-equal-length training is to a certain extent in line with the mechanical characteristics and forms of muscle contraction in the process of change of direction. However, few studies have investigated the effects of unilateral and bilateral isometric training on the unilateral and bilateral explosive force and change of direction ability of basketball players. In this paper, we used an experimental method to investigate the effects of 8 weeks of uni- and bi-lateral super isometric training of the lower limb on the explosive power and agility of the legs of basketball players. The results of intra-group leg explosive strength test before and after the experiment showed that the difference between the experimental group before and after the intervention was significant (P<0.05) in unilateral reverse jump, bilateral reverse jump, unilateral reaction strength index, and bilateral reaction strength index scores; the difference between the control group before and after the intervention was significant (P><0.05) in bilateral reverse jump and bilateral reaction strength index scores. Comparison of the leg explosive strength results between the groups after the experiment showed that the two groups interacted significantly only in the left reverse jump (P><0.05), and there was no significant interaction in the other test results (P>0.05) in unilateral reverse jump, bilateral reverse jump, unilateral reaction strength index, and bilateral reaction strength index scores; the difference between the control group before and after the intervention was significant (P<0.05) ) in bilateral reverse jump and bilateral reaction strength index scores. Comparison of the leg explosive strength results between the groups after the experiment showed that the two groups interacted significantly only in the left reverse jump (P0.05), and there was no significant interaction in the other test results (P>0.05).