Physical training for basketball players is important for improving the overall economic level of athletes. Smart wearable devices can enable coaches and athletes to plan and adjust training more scientifically and accurately by monitoring and recording athletes' physiological data and sports performance in real time. In this study, two sports physiological indexes, heart rate and blood oxygen saturation, were monitored and recorded by Xiaomi sports band 7 for basketball players, and a comparative study was conducted on the physical training process of adolescent female basketball players. The experiment proves that the real-time heart rate and blood oxygen saturation parameters provided by Xiaomi sports band 7 can reflect the athlete's body's adaptation to the training content in real time, and the coaches can better grasp the athlete's physical fitness level and improve the training effect by adjusting the training intensity.