The invention provides a straw bottle cap. The straw bottle cap comprises a bottle cap, and is characterized by also comprising a bent straw 2. A hole 3 is formed in the upper surface of the bent straw 2; a groove 4 is formed in the upper surface of the bottle cap; the part, positioned on the bottle cap, of the bent straw is embedded in the groove 4; a part, positioned under the upper surface of the bottle cover, of the bent straw 2 is bent into a spiral shape; and the bottommost part of the bent straw towers above the bottommost of the side wall of the bottle cap. According to the straw bottle cap provided by the invention, the bottle cap can be directly unscrewed to drink water, and the straw also can be used for drinking water; moreover, the structure is simple and reasonable, and the cost is relatively low.