Corn beard is a plant of the family Gramineae, and corn is what we usually call the stigma and stigma of corn. Chinese medicine believes that corn beard taste sweet and light, sexual flat, to the kidney, liver and gallbladder meridian. It treats the kidneys with diuretic and swelling, and clears the liver and gallbladder. It is mainly used clinically to treat edema, dripping urine, jaundice, cholecystitis, gallstones, hypertensive disease, diabetes, and lactation. Maize whiskers contain cryptoxanthin, pantothenic acid, inositol, glutathiol, dousterol, vitamin C, vitamin K, malic acid, polyprotic acid and other organic acids, and also contain fatty oil, volatile oil, gum, alkaloids and so on. Modern pharmacological research believes that corn beard has diuretic, hypotensive, hypoglycemic, hypolipidemic, cholagogic and anti-yellowing effects.