Abstract: A wearable attitude detection system was designed to detect human body posture in this paper.Firstly,a series of experiments were carried out,and the results showed that there were different accelerations in different positions of human body.So,we can detect defferent postures by wearing a varying quantity of sensors in different positions.The specific implementation method is that users wear acceleration sensors in the corresponding positions of human body according to their needs,and then,the acceleration information is sent to the tablet PC via Bluetooth.Finally,to get the corresponding posture results,the tablet computer has to do a lot of processing.So far,this system can detect sitting postures,check for falls,count,steps,etc.