Corn beard tea, also known as asparagus tea, is sweet and flat, and has a wide range of preventive and health care uses. Because corn is wrapped in corn bags during its growth, it needs corn stigma to absorb nutrients, so corn stigma contains various vitamins and other nutrients, which can not only cool blood and reduce fever, but also dispel damp heat in the body, induce diuresis and reduce swelling. After being made into tea, it is a good diet drink.