This creation is that a kind of related experimental mouse of what fills food auxiliary device,System includes a hollow tube,One end of the hollow tube has one first opening,And the opposite other end has one second opening,It is that the mouth of small what first opening encloses that the mouth of second opening, which encloses,; In use,One experimental mouse is placed in hollow tube by system by the first opening,Make in experimental mouse whole body accommodating what hollow tube and the prominent what second in its nose and mouth is open; The first opening is sealed to prevent experimental mouse from being loosened by the first opening again with a barrier element is temporary; Most Hou,It carries out filling food movement; Thereby,Can easily and firmly Baoding experimental mouse,Reach and saves the time and make the effect of filling food more smooth operation.本創作係有關於一種實驗鼠灌食輔助裝置,係包含一中空管體,該中空管體之一端具有一第一開口,以及相對之另一端具有一第二開口,該第二開口之口圍係小於該第一開口之口圍;使用時,係將一實驗鼠由第一開口置入中空管體內,使實驗鼠全身容置於中空管體中且其口鼻部位突出於第二開口;再以一阻隔元件暫時性封住第一開口以防止實驗鼠由第一開口鬆脫;最後,進行灌食動作;藉此,可輕易且穩固地保定實驗鼠,達到節省時間並使灌食更順利操作之功效。