Blowout prevention suction pipe cover

The utility model discloses a blowout prevention straw cover which comprises a turning cover hinged to the right side of a cover body and a cup body connected to a lower end opening of the cover body in a sealed mode, a buckle assembly used for clamping or opening the turning cover is arranged on the left side of the cover body, and a suction nozzle and an air leakage assembly are sequentially arranged on the top of the cover body from right to left. The air leakage assembly comprises an air leakage button, an upper air leakage sealing plug, an air leakage button spring and a lower air leakage sealing plug, a guide rod is arranged below the air leakage button and arranged in the air leakage channel of the cover body, and the upper air leakage sealing plug and the lower air leakage sealing plug are fixedly arranged on the upper portion and the lower portion of the guide rod respectively. And an air leakage hole is formed in an air leakage channel between the upper air leakage sealing plug and the lower air lea