The effects and functions of natural copper and calcined natural copper are basically the same, both have the effect of dispersing blood stasis and relieving pain, renewing tendons and connecting bones, and are used for the treatment of bruises and injuries, tendon and bone fractures, bruises and pain, etc. The natural copper is a sulfide mineral called pyrite. Natural copper is a sulfide mineral pyrite pyrite, mainly containing iron disulfide. It is pungent in flavor, neutral in nature and belongs to the liver meridian. Its effect is to dissipate blood stasis and relieve pain, and renew the tendons and bones. It is used in the treatment of bruises and injuries, tendon and bone fractures, bruises and pain. Calcined natural copper refers to the natural copper with a large fire heating, calcined until red, immediately into the vinegar quenching, to be cooled and removed, repeated several times can be. Its efficacy is basically the same as natural copper, except that calcination can enhance the effect of dispersing blood stasis and relieving pain, and it is also easy to be crushed and processed, which is more conducive to decocting the active ingredients. Natural Copper and Calcined Natural Copper are both products for promoting blood circulation and dispersing blood stasis, and should not be taken for a long time. Pregnant women and people with blood deficiency and no blood stasis should be cautious in using them. Chinese medicine should be used under the guidance of a professional Chinese medicine practitioner, and should not be used blindly by oneself to avoid causing adverse reactions.