Coffee stirring rod is a kind of straw, which is specially designed for hot drinks. This design can avoid burns. Because of this concave shape, the drinker's lips can't wrap it all tightly. When people use it to absorb heat from coffee, a small amount of air is sucked up at the same time. In this way, not only the flow rate of hot drinks is slow, but also the temperature of hot drinks can be reduced, so that the hot drinks in the mouth will not burn the drinker.