This creation provides a kind of hand-power exercise device,System by a body of rod,The body of rod surface is formed with an at least cambered surface,Each point to the body of rod central axis is equidistant in the cambered surface,The body of rod both ends are respectively formed with one first adapter and the second adapter,First adapter holds portion for socket what 1 first,Second adapter holds portion for socket what 1 second； One strain inductor,The cambered surface on the strain inductor fixed what body of rod surface； One twisting force indicator,The twisting force indicator is set on the what body of rod,The twisting force indicator shows the torque value be converted by the telecommunication signals that the strain inductor exports and angle number with digital type,It sees and shows for user.本創作提供一種手力練習裝置，係由一桿體，該桿體表面形成有至少一弧面，該弧面上各點至該桿體中心軸距離相等，該桿體兩端各形成有一第一轉接頭與第二轉接頭，該第一轉接頭可供套接於一第一握部，該第二轉接頭可供套接於一第二握部；一應變感應器，該應變感應器固設於該桿體表面之弧面；一扭力顯示器，該扭力顯示器設於該桿體上，該扭力顯示器以數位式顯示由該應變感應器所輸出之電信訊號所轉換成之扭力值與角度數字，供使用者觀示。
