When Lei Gong Teng is applied externally to treat joint diseases, it can be combined with Qiang Wu, Wei Ling Xian, Angelica sinensis and other traditional Chinese medicines to be pounded and applied externally locally. Lei Gong Teng was first published in “Gleanings from the Compendium of Materia Medica”. This product is fierce and poisonous, long for dispelling wind and activating collaterals, for the treatment of rheumatism and paralysis of the essential drugs. Because Lei Gong Teng is bitter cold and strong in clearing heat, swelling and pain (elimination of swelling and pain) is more effective, so it is especially suitable for joint redness, swelling and heat pain, swelling is not easy to eliminate, flexion and extension of unfavorable, and even deformation of the joints of the intractable paralysis, can be with Qiang Wu, Weiling Xian, Angelica sinensis, etc., and mashed local external compresses. Lei Gong Teng is good at removing dampness, killing insects and relieving itching, and can be used to treat leprosy, eczema, ringworm and scabies. Adverse effects of Lei Gongteng is not clear, pregnant women should not use, heart, liver, kidney insufficiency and leukopenia should be taken with caution. Drugs should be used under the guidance of a doctor, do not blindly self-medication.