The invention belongs to the technical field of traditional Chinese medicine, and specifically relates to a plaster for treating rheumatic bone disease and a preparation method thereof, which is prepared from the following raw materials in parts by weight: 3 parts of angelica, 3 parts of Chuanxiong, 3 parts of frankincense, 3 parts of myrrh, 2 parts of cinnamon sticks, 2 parts of safflower, 2 parts of ground turtle, 2 parts of Clematis, 2 parts of sumac, 3 parts of Achyranthes bidentata, 2 parts of Asarum, 2 parts of Zhicaowu, 2 parts of Zhichuanwu 2 parts, 2 parts of southern star, 2 parts of pinellia, 3 parts of rhubarb, 3 parts of bletilla striata, 2 parts of zhebei, 2 parts of angelica dahurica, 2 parts of nuxychee, 3 parts of turmeric, 10 parts of borneol, 500 parts of sesame oil, the present invention A variety of Chinese herbal medicines are used in combination and comprehensive treatment. The active ingredients of the medicine penetrate into the lesion through the skin, improve the blood circulation of the lesion, promote the subsidence of local inflammation and edema, relieve muscle tension and spasm, and quickly relieve symptoms. It is suitable for various Rheumatic bone diseases such as rheumatism, rheumatoid arthritis, degenerative arthritis, etc. The medicine components are cheap and suitable for industrial production.