A medicine liquid tank is mainly characterized in that a groove is recessed on the top plate adjacent to the upper end portion of the inner wall of the tank body, and the groove separates the upper end portion of the inner wall to define a positioning plate for a non-linear safety The injection needle is positioned and suspended, and an opening closed by a soft plug is provided in the groove for the safe injection needle to penetrate into the tank body. The emptying rack in the tank is provided with a bottom plate to form a high medicine in the tank The bottom plate is inclined downward from the outside to the inside, and can guide and collect the medicine liquid in the medicine holding space, so that the safety injection needle can be extended into the medicine holding space for positioning, and the medicine liquid can be completely extracted to avoid Residues form residual medicines, causing waste and toxic harm to the environment, with better convenience in operation.一種藥液罐，主要特徵乃在於緊鄰罐體內側壁上端部位之頂板上凹設一槽溝，該槽溝使該內側壁上端部位分隔而界定形成一定位板，用以供一非直線狀之安全注射針頭定位懸掛，該槽溝內設置一由軟塞封閉之開口，用以供該安全注射針頭刺穿深入罐體內，該罐體內騰空架設有一底板，使該罐體內形成一架高之盛藥空間，該底板係由外向內往下傾斜，具可將盛藥空間內之藥液導流匯集，藉此供該安全注射針頭伸入該盛藥空間內定位，可將藥液徹底抽取，避免殘留形成殘藥，造成浪費及藥害污染環境，在操作上具有較佳便利性。
