Mentha haplocalyx Briq. (Mentha haplocalyx Briq.) is called "silver dancao", which is a lamiaceae plant, that is, it belongs to other dried whole grasses. It is mostly born in the mountains and wetlands and rivers, and the rhizomes are born horizontally underground, mostly at an altitude of 2100 meters, but it can also grow at an altitude of 3500 meters, and it is an aromatic crop with special economic value. The whole plant is green and fragrant. The leaves are opposite, the flowers are small lilac, lip-shaped, and bear small dark purple-brown fruits after flowers. Peppermint is one of the commonly used Chinese medicines. It is a spicy and cold sweating antipyretic, which treats influenza, headache, red eyes, body heat, swelling and pain in the throat and gums. Topical use can treat neuralgia, itchy skin, rashes and eczema. Usually use mint instead of tea, clear the heart and eyes.
