A kind of automatic injector structure,Include: a sub-assembly,It is set as a sleeve,Sleeve one end periphery is equipped with two positioning grooves,Two positioning grooves respectively combine a bracket,The another end of two brackets then combines a center to set the locating plate of perforation,And sleeve and it is equipped with a push piece； One injection needle tube,It wears in the sleeve of sub-assembly,The two of the injection needle tube end set hand and position in conjunction with two positioning grooves of sub-assembly,The syringe push rod is in conjunction with the push piece； One engine,The power outlet and the injection needle tube link； And a drug injector,The push rod of the drug injector is in conjunction with the push piece another end； Thereby,The power of engine is directed on drug injector through injection needle tube,Drug injector is enabled to form an automatic injection structure person.一種自動注射器結構，包含：一組合件，設為一套筒，該套筒一端周緣突設有二定位凹槽，二定位凹槽各結合一支架，二支架的另端則結合一中央設穿孔的定位片，且套筒並配設有一推件；一注射針筒，穿套入組合件的套筒中，該注射針筒端部的二置手部並與組合件的的二定位凹槽結合定位，該針筒推桿與所述推件結合；一動力機，該動力出口與所述注射針筒連結；以及一藥品注射器，該藥品注射器的推桿與所述推件另端結合；藉此，透過注射針筒將動力機的動力導引至藥品注射器上，令藥品注射器形成一自動注射結構者。
