Shamu knots should be fir knots, which have the effect of dispersing dampness and poison, expelling wind and relieving pain. Cedar knots are the nodules on the branches of the cedar tree, family Cedrus. As a traditional Chinese medicine, it is pungent in flavor and slightly warm in nature, with the efficacy of dispelling wind and relieving pain (dissipating wind evil and relieving pain in the muscles and bones) and dispersing dampness and poison, and it can be used to treat rheumatism and bone pain, swelling and pain in the feet, bruises, polycarbonates, and stomach pain. What kind of adverse reactions will occur when taking Cedarwood Sections is not clear, and the specific contraindications for taking it have not yet been clarified. Therefore, the specific use of cedarwood joints please under the guidance of a doctor, do not take on their own, so as not to cause unnecessary damage to the body.