A kind of injection needle tube, main system is had the screw thread scale of improvement Hou by syringe inner wall, by doing quantifying for injection dosage when rotation force with screw thread scale, it can especially be injected compared with vicidity substance with what injection liquid, semi liquid state or drug, and the screw-type microinjection apparatus with easy what control injection dosage characteristic.一種注射針筒，主要係由針筒內壁有改良後之螺紋刻度，藉由旋轉施力時以螺紋刻度來做注射劑量之定量，可用於注射液態、半液態或藥物特別是較黏稠性物質注射，且具有易於控制注射劑量特性之螺紋式微量注射裝置。
