PURPOSE: The titled bamboo salt prepared by adding gold or silver to bamboo salt in the process for the manufacture of bamboo salt or during post processing after the manufacture is provided, which has antibacterial activity and blood circulation improving activity. CONSTITUTION: Bamboo salt containing 0.005 to 1.5% by weight of gold and silver respectively or mixtures thereof is prepared by mixing fine powder of gold and silver in a metal state with conventional bamboo salt during post processing; coating gold and silver on a bamboo salt granule; or mixing gold and silver to bamboo salt.
