While drinking water cannot be taken with the mask, the cheering and conversation can act with the mask. However, if there is drinking water, most people can consider that such actions that release the mask spread ?, and take bacteria. The present invention provides a bottle mask for preventing a beverage bottle from being splashed and preventing ? diffusion. An adhesive tape is provided on the left end of the lower side inside of one fan-shaped mount whose upper side is an arc, and a mounting belt is provided on the right of the lower side. A mark indicating the mounting position is provided on the outside of the mounting belt. Folding lines are provided to the right and left inside of the fan-shaped mount to increase its spread. The bottle mask 1 has the above structure

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