A simple safety needle for pumping medicine includes a housing and a syringe, wherein the surface of the housing has a guide groove and a through hole. The syringe includes a syringe, a needle, and a needle core. The needle is combined with the needle. On the side of the syringe, the needle core is sleeved into the syringe, wherein the syringe is movably disposed in the housing, and the side of the syringe is movably passed through one end of the housing, and one end of the needle core extends A guide rail slides on the guide groove. When the syringe is pressed and fixed by the finger through the through hole, the guide rail can be moved backward in the guide groove by the pressure of the finger to form the needle pumping action； when the finger is not pressed and fixed, the syringe can be applied by the finger. Press the guide rail to move forward in the guide groove to constitute the injection of the needle. After that, push the guide rail through the guide groove to move backward with the pressure of your finger to move the syringe backward and retract the needle into the housing. It can completely cover the needles, avoid the situation that people are infected with various blood infectious diseases due to needle sticks, and improve safety.一種簡易式抽藥之安全針具，包含一殼體、一注射器，其中該殼體表面具有一導槽、一通孔，該注射器包含一針筒、一針頭、一針心，該針頭結合於該針筒一側，該針心套入該針筒，其中，該針筒以可活動狀設於該殼體內，且該針筒一側可活動狀穿設該殼體一端，該針心一端延伸一導軌，該導軌導滑於該導槽。當藉由手指經由通孔施壓固定針筒，可藉由手指施壓推動導軌於導槽中往後移動，構成針頭之抽藥動作；當手指沒有施壓固定針筒，可藉由手指施壓推動導軌於導槽中往前移動，構成針頭之注射動作；之後，藉由手指施壓推動導軌於導槽中再往後移動，使針筒向後移動，並使針頭縮入殼體中，達到完全覆蓋針頭，避免因為針扎(needlestick)導致人員感染各種血液性傳染病之情形，增進安全性。
