Mint is a perennial herb in the family Labiatae. The whole herb is used as medicine. Peppermint stems and leaves contain volatile oil about 1%, volatile oil called peppermint oil, the oil mainly contains L-menthol about 77% to 87%, followed by L-menthol ketone about 10% and peppermint esters 3% to 6%, in addition to D-8-acetoxycarvone, such as chamomile. Pungent flavor, cool nature. It has the functions of dispersing wind-heat, clearing the head and eyes, and penetrating rashes. Used for wind-heat cold, headache, red eyes, sore throat, mouth sores, rubella, measles and other conditions. Menthol brain has analgesic, antipruritic, antiseptic, antiseptic and other therapeutic effects. Mentha piperita fried charcoal has the effect of easing the liver and relieving depression, treating liver depression and dystocia, menstrual disorders and so on. In addition, it is also used in spices, food, cosmetics and other industries, wide use, large dosage. Mainly produced in Jiangsu, Jiangxi, Hebei, Sichuan and other provinces, throughout the country are cultivated.

Mint has a strong adaptability to environmental conditions. But like warm and humid climate. Roots sprouted seedlings at 5 to 6 degrees Celsius, plant growth at a suitable temperature of 20 to 30 degrees Celsius, the temperature at -2 degrees Celsius, the stems and leaves withered, but its rhizomes have a strong cold tolerance, as long as the soil maintains a certain degree of humidity, the winter in the region of -30 to -20 degrees Celsius can still be safe overwintering. General mint in the day and night temperature difference is large, conducive to the accumulation of oil and brain. Long sunshine can promote flowering, and is conducive to improving oil content. Therefore, sufficient sunlight during the growth period is favorable to the accumulation of oil and brain. It can be propagated by seed, cuttings, divisions and rhizomes.