The lower limb strength training system consists of an intelligent jump box, a host, and an app. It can be controlled through the app to light up in terms of time and frequency. It is suitable for many courses such as weighted knee raises, lateral skipping, full squats with straight leg jumps, etc. The app can control the color, sequence, and number of lights on the intelligent jump box, which can be divided into multiple groups, each independent of the other. This greatly improves the efficiency of the classroom, provides teachers with rapid and effective data statistics. At the end of the exercise, it automatically generates a data report,targetedly improving the physical quality of the exerciser.