A kind of pouch-type transfusion injection device, system includes a front housing, a Hou casing, a switch, a key panel, a display, a control circuit board, a Mobile electric power, a piezoelectricity side Pu and plural screw, the elements such as the switch, key panel, the display that are wherein exposed outside are to be embedded on front housing wall； The elements such as control circuit board, Mobile electric power, piezoelectricity side Pu in being hidden in, then be installed in the accommodating space that front housing and Hou casing are constituted using screw. A dropping liquid can be accurately infused into vivo according to patient demand via pressing keys panel driving piezoelectricity side Pu with different running speeds by fluid infusion.一種口袋型點滴注射裝置，係包括一前機殼、一後機殼、一開關、一按鍵面板、一顯示器、一控制電路板、一行動電源、一壓電幫浦及複數螺絲，其中顯露在外的開關、按鍵面板、顯示器等元件，均係嵌設在前機殼壁上；隱藏在內的控制電路板、行動電源、壓電幫浦等元件，則採用螺絲固設在前機殼與後機殼所構成的容置空間內。點滴注射依據患者需求，經由按壓按鍵面板驅動壓電幫浦以不同的運轉速度，能精確的將點滴液輸注到體內。
