A rotary retracting safety syringe device comprises a syringe, a rotating sleeve and an outer cover. The syringe comprises a barrel, a needle, and a plunger. The surface of the barrel has at least one protrusion. The needle is coupled to one side of the barrel. The plunger is inserted into the barrel. The rotating sleeve is sleevingly provided on the surface of the barrel. The surface of the rotating sleeve defines at least one arc-shaped hole, so that the protrusion of the barrel is inserted into the arc-shaped hole. The outer sleeve is sleevingly provided on the surface of the rotating sleeve. The rotating sleeve can be rotated only and cannot be moved. The surface of the outer sleeve defines at least a through hole, so that the protrusion of the barrel is guided to slide into the through hole. After using the syringe to complete the injection, the medical professional holds the outer cover with one hand and rotates the rotating sleeve with the other hand, and the arc-shaped hole pushes the protrusion to move. The protrusion is restricted to move straight upward along the through hole, so as to drive the barrel to move upward, such that the needle is pulled out from the injection portion without being rotated, and is retracted into the outer sleeve to be completely covered. Thereby, the present invention can prevent the medical professionals from being infected with various bloody infectious diseases due to needlestick, and improve safety.一種旋轉回縮式安全針具，包含一注射器、一旋轉套、一外套，該注射器包含一針筒、一針頭、一針心，該針筒表面具有至少一突部，該針頭結合於該針筒一側，該針心套入該針筒，該旋轉套套設該針筒表面，該旋轉套表面具有至少一弧形孔，使該針筒之突部穿設該弧形孔，該外套套設該旋轉套，該旋轉套只能轉動不能移動，該外套表面具有至少一直穿孔，使該針筒之突部導滑於該直穿孔。當使用注射器完成注射動作後，一手握持固定住外套，同時，藉另一手轉動旋轉套，該弧形孔推動突部移動，該突部被限制只能循著直穿孔向上直行移動，驅使該針筒向上移動，並使針頭不轉動狀拔出注射部位且縮入外套中，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。
