Wind oil essence is mainly composed of menthol, methyl salicylate, camphor, eucalyptus oil, eugenol, and auxiliary flavor, chlorophyll, liquid paraffin and other aromatic drugs. It mainly has the functions of dispersing wind and cold, moving qi and analgesia, dispelling bruises and swelling, etc. With the effect of regulating meridians by acupressure, it can relieve headache symptoms faster. It is often used in daily life for headache, dizziness and motion sickness caused by insect bites and colds. Wind oil essence is generally for external use, but not all people are suitable for use. Because it contains camphor, animal experiments have found that it has certain reproductive toxicity and developmental toxicity, and it has obvious damage to kidney at high concentration, so it should be used with caution for pregnant women and children under three years old. People with burns, injuries and ulcers should stop using it, mainly because it can cause severe pain and is not conducive to wound healing; also pay attention to the application of the medicine not to get the medicine into the eyes by mistake, if there is a misapplication, should use a lot of water to rinse; a small number of people are allergic to anthocyanin, so the skin rash itchy after external application should be stopped.