Silver ions have a strong bactericidal effect, and wearing silver ornaments has many benefits to the human body, not only beautiful and generous, but also has the function of strengthening the body. The ancients had such a saying, "Wear silver, and you will always be healthy and rich." In medicine, the role of silver in human health is much higher than that of gold, and many domestic medical scientists believe that silver is a miracle in the history of medicine. Before BC, the ancients knew that silver could accelerate wound healing, prevent infection and prevent bacterial growth. According to Li Shizhen's Compendium of Materia Medica, silver has the effect of "calming the five internal organs, calming the mind, stopping convulsions and eliminating evil spirits". Ancient physicians, such as Bian Que, Sun Simiao and Li Shizhen, often wore silver bracelets when they went out, which could be used to cure diseases and save lives when necessary. Eliminating evil mentioned in Compendium of Materia Medica does not necessarily refer to monsters, but refers to the invasion of wind evil, such as rheumatism and heat toxin in the body. The thermal conductivity of silver is the most prominent among all precious metals, and it can quickly dissipate the heat of blood vessels. Assuming that the thermal conductivity of silver is 100, the thermal conductivity of gold is only 53, that of iron is only 1 1, and that of platinum is only 8. This distinct thermal conductivity quickly dissipates excess heat from blood vessels and the body, which has an excellent effect on preventing various diseases.