People's aging begins with their feet, the dead roots of trees fail first, and people's old feet decline first. As the ancients said, all diseases are born in the feet. Self-heating socks are also called hot moxibustion socks (fire moxibustion socks). According to China traditional medicine and the principle of human meridians, biological permanent magnets are placed at corresponding acupoints, which have the effects of enhancing metabolism, promoting the discharge of harmful substances, improving blood circulation, inhibiting bacterial growth, diminishing inflammation and relieving pain, sweating and deodorizing.