The invention relates to an inverted-suction splashing preventing straw. The inverted-suction splashing preventing straw comprises a straw body, a sealing part and a flow control component. For the inverted-suction splashing preventing straw, the sealing part seals an opening of a container, two different states of a slider in the flow control component under the action of gravity and the action of sucking force are ingeniously adopted, the closing and communication of the straw are realized, and the technical problem that for an existing straw, when the container is overturned or falls over,liquid in the container flows out, and then the normal drinking of a user is affected is perfectly solved.