Bottle opening sealing structure of reagent bottle

The reagent bottle opening sealing structure comprises a bottle mouth, the bottle mouth is of a cylindrical structure with one end open, the open end of the bottle mouth is fixedly connected to a bottle body corresponding to an opening of the bottle body, a first through hole is formed in the end face, away from the bottle body, of the bottle mouth, and the inner diameter of the first through hole is smaller than the radius of the end face of the bottle mouth; the first through hole is located in one side of the center of the bottle neck, the bottle neck is rotationally sleeved with a bottle cap, a second through hole is formed in the end of the bottle cap, the diameter of the second through hole is smaller than the radius of the end face of the bottle cap, and the second through hole is located in one side of the center of the bottle neck. The possibility that the bottle cap is lost is reduced. 本申请涉及一种试剂瓶瓶口密封结构，其包括瓶嘴，所述瓶嘴为一端开口的筒状结构，所述瓶嘴的开口端对应瓶身的开口固接在瓶身上，所述瓶嘴背离瓶身的端面上设有第一通孔，所述第一通孔内径小于瓶嘴端面的半径，所述第一通孔位于瓶嘴中心的一侧，所述