The medicated pillow is mainly used for treating diseases through volatile medicinal flavor. In fact, it is the molecule of Chinese medicine to treat diseases. Take the medicine pillow of Emperor Wu of the Han Dynasty that I am using now, and improve the human environment through internal fumigation and external fumigation. Internal fumigation means that the fragrance directly enters the seven orifices and then acts on the viscera; External fumigation is administered through the head meridians and connects the whole body through the meridians to achieve the purpose of improving the body, treating diseases and preserving health.