In order to improve the accuracy of human motion data acquisition and reduce the time-consuming of data acquisition, an intelligent motion Bracelet human motion data acquisition system based on human-computer interaction is proposed and designed. Firstly, the overall architecture of the system is designed, mainly including application layer, transmission layer and perception layer. Secondly, the system hardware is designed, mainly including the motion data acquisition module, temperature acquisition module and ZigBee wireless transmission module of human-computer interaction intelligent sports bracelet, so as to ensure the realization of the system function. Finally, in the part of system software design, wavelet transform is used to discretize the collected human motion data and divide the attributes, so as to improve the availability of the data. The experimental results show that compared with the traditional motion data acquisition system, the designed system has higher acquisition accuracy and shorter time-consuming.