If the scraping board is made of jade or ox horn, the best is bian stone. Chinese medicine believes that Bian Shi has the functions of calming nerves, regulating qi and blood, and dredging meridians. Bian Shi therapy has the functions of warming yang and dredging collaterals, dispelling cold and removing dampness, removing blood stasis and relieving pain, suppressing yang and calming nerves, and relieving convulsion and palpitation.

The difference among Bian Shi therapy, scrapping therapy and massage therapy: Bian Que made of Spence pumice relies on its own meridian warming besides mechanical force generated by various methods, so it is easier to promote the circulation of qi and blood along meridians. Yang deficiency syndrome is the best clinical treatment for cold syndrome.

Scraping is mainly for diarrhea and exorcism, which is harmful and painful to healthy qi. Bian Shi therapy is more flexible and selective than massage, which is more suitable for public health care and beauty. It is best to combine Bian Shi therapy and massage.