The efficacy of pine knots is to dispel wind and dampness, soothe tendons and channels, invigorate blood and relieve pain. In the clinical role, it is mainly reflected in that it can be antibacterial, especially for the epidermis of Staphylococcus aureus and Escherichia coli, which have a certain inhibitory effect on human dermatophytosis. Pine knots also have the effect of treating stones, especially for gallbladder stones, which can not stimulate the gallbladder, and can quickly dissolve and expel the stones from the body. In clinical application, pine knots can treat skin diseases, joint pain, especially rheumatoid arthritis with redness, swelling, heat and pain of joints, as well as foot cramps and bruises, and the effect is very obvious.