Anemarrhena may be useful for relieving heatstroke, and it is often used externally on temples and other parts of the body to relieve heatstroke, but it is not a treatment for heatstroke. Essence of wind oil is composed of menthol, eucalyptus oil, methyl salicylate, camphor and eugenol. Wind oil essence has the effect of cooling, so the clinical use of this product is often applied externally to the temples, the hall of the seal and other parts of the summer heat, there is a certain effect. However, essential oil is not a drug used for the treatment of heatstroke. In addition to the cooling effect, but also has the wind, pain, itching effect. It is used for motion sickness, mosquito bites, dizziness caused by cold and flu, headache. Allergic to the product, skin burns, ulcers, injuries prohibit the use of essential oil. Children under three years of age, pregnant women should use this product with caution, the adverse effects of this product is not clear. It should be used reasonably under the guidance of a doctor.