An electronic calculating apparatus, system, and method for providing body posture health information. The method includes the steps of: calculating a posture data cluster based on signals detected by an inertial sensor disposed on a human body； comparing the posture data cluster with a plurality of preset posture data clusters individually to determine whether the posture data cluster matches one of the preset posture data clusters； if it matches one of the preset posture data clusters, generating a feedback message； calculating a plurality of muscle status indexes based on signals detected by electromyography sensors disposed on the human body； comparing the muscle status indexes with corresponding preset muscle status indexes individually to determine whether one of the muscle status indexes is abnormal； providing a suggestion information in respond to at least one of the muscle status indexes is abnormal； and displaying a multimedia corresponding to the suggestion information.一種提供人體姿勢保健資訊的電子計算裝置、系統與方法。該方法包含下列步驟：根據設置於人體上之慣性感測器所偵測之訊號，計算姿勢資料群集；將姿勢資料群集與多個預設姿勢資料群集比對，以判斷姿勢資料群集與多個預設姿勢資料群集其中之一是否相符；若是，則產生回饋訊息；根據設置於人體上之多個肌電感測器所偵測之訊號，計算多個肌肉狀態指標；將多個肌肉狀態指標與相對應之多個預設肌肉狀態指標比對，以判斷每一肌肉狀態指標是否異常；當至少一個肌肉狀態指標異常時，則提供建議資訊；以及顯示建議資訊所對應的多媒體。
