The utility model proposes a kind of auxiliary system of injection operation, and it includes a camera device, a syringe, a manual three-dimensional fine-tuning rod piece group, a control host and a displays. There is Manual three-dimensional to finely tune rod piece group by what, camera device and syringe can steadily be temporarily fixed in the air, stablize and image and reduce the error that doctor applies injection. In addition, doctor can refer to the resultant image shown on display, as the reference of injection operation, to reduce the probability that operation loses.本新型提出了一種注射手術的輔助系統,其包含一攝錄像器、一注射器、一手動三維微調桿件組、一控制主機及一顯示器。由於有手動三維微調桿件組,攝錄像器與注射器可以穩定地暫時固定在空中,穩定攝像並減少醫生施作注射的誤差。此外,醫生可參考顯示器上顯示的合成影像,作為注射手術的參考,以減少手術敗的機率。