Hot compress has two thousand years of history in China. Intraditional Chinese Medicine theory,hot compresssalt is also called the "iron",whichcan warm skin,remove cold, stimulate qi & blood, and eliminatephlegm & pain. Hot salt can be used on acupuncture points and muscles of the body, permeating into body quickly with hot air, acceleratingblood circulation,andalsoeliminatingbody’s moisture andcold after heating.