A body temperature measuring device includes a main body, a probe, and a holding mechanism. The probe is fixed on the main body. The probe has a cone body. The holding mechanism is disposed on the main body in a moveable manner, wherein the holding mechanism is used for holding an inner wall of a probe cover when being at a first position, and for releasing the probe cover when being at a second position.一種體溫量測裝置係包含一本體,一探頭,及一固持機構。該探頭係固定於該本體上,該探頭具有一錐體。該固持機構係以可移動之方式設置於該本體上。其中,當該固持機構位於一第一位置時,係固持一探頭套之內壁,以使該探頭套覆蓋於該錐體上,當該固持機構位於一第二位置時釋放該探頭套。100‧‧‧體溫量測裝置110‧‧‧本體120‧‧‧探頭122‧‧‧錐體130‧‧‧固持機構132‧‧‧卡勾140‧‧‧探頭套142‧‧‧內壁150‧‧‧彈性元件A‧‧‧第一位置B‧‧‧第二位置
