The invention discloses a medicament for treating scapulohumeral periarthritis and a preparation method, and belongs to the field of traditional Chinese medicine. The medicament is prepared from the following raw materials as effective components: fruit of eucalyptus globulus labill, radix angelicae dahuricae, rhizome et radix notopterygii, purslane speedwell herb, cane leaves of ficus pumila, flower of woodfordia fruticosa, banyan leaves, root of hemandialeaf stephania, indian stringbush root, stem of falsenettleleaf pepper, henry ormosia wood root, whole grass of ipomoea pes-caprae, rhizome or whole grass of stachys sieboldin, whole grass or root of phlomis umbrosa, whole plant of enkianthus quinque floruslour and rhizoma tupistrae chinensis. According to the medicament, the adopted medicinal materials are properly blended, so that the medicament is consistent with the theories of traditional Chinese medicine and modern medicine and pharmacology, has the effects of dispelling wind, relaxing muscles and tendons, diminishing swelling, removing blood stasis and promoting blood circulation to relieve pain, has remarkable curative effects on scapulohumeral periarthritis, is short in treatment course, quick in effect, convenient to take, free of relapse after recovery, low in cost, safe and free of toxic or side effects, and has high wide clinical popularization and application value, and the aim of treating both symptoms and root causes can be fulfilled.