Buckwheat pillows are better because buckwheat hulls have the advantages of good breathability, moisture absorption, antibacterial and anti-mite. The granular structure of buckwheat hulls can provide good support and adaptability, help to maintain the natural curve of the cervical spine, reduce cervical pressure. Buckwheat pillows can also promote blood circulation, relieve neck muscle tension and fatigue. In contrast, although wormwood pillows have some herbal healing properties, they have poor cervical support and adaptability, and cannot meet the needs of cervical spine health care.