The invention discloses a traditional Chinese medicine decoction for treating severe scapulohumeral periarthritis. The traditional Chinese medicine decoction is prepared from the following traditional Chinese medicinal materials in parts by weight: 10 parts of cassia twig, 12 parts of prepared rehmannia root, 10 parts of root of spine aralia, 8 parts of Szechuan lovage rhizome, 8 parts of great burdock achene, 8 parts of white silkworm, 10 parts of ziziphus apetala, 8 parts of herb of Yunnan begonia, 15 parts of snakegourd root, 6 parts of wild sword bean, 4 parts of Chinese thorowax root, 4 parts of oyster shell, 14 parts of milkvetch root, 6 parts of halenia elliptica, 5 parts of root and rhizome of canton fairybells, 4 parts of flower of mesua ferrea, 3 parts of herb of sessilefruit chinaure, and 2 parts of ginkgo pollen. A clinical experiment proves that by selection of appropriate medicinal materials and proportions thereof, the traditional Chinese medicine decoction disclosed by the invention achieves a significant effect of treating severe scapulohumeral periarthritis, is safe, and does not have toxic or side effects.