The invention discloses an external traditional Chinese medicine preparation for treating supraspinatus tendonitis caused by wind-cold-damp retention. The external traditional Chinese medicine preparation is prepared from the following raw materials: aralia decaisneana, garden balsam stem, suberect spatholobus stem, seguin argyreia herb, mulberry twig, radix smilacis sieboldi, liquidambar formosana hance, olibanum, myrrh, folium artemisiae argyi, lycopodium clavatum, chinese lobelia, silkworm feces, berba aristolochiae mollissimae, oleum terebinthinae, herba siegesbeckiae, loofah sponge, homalomena occulta, schizophragma integrifolium, cortex sclerotii poriae, lxeris japonica, corydalis amabilis Migo, native copper, turmeric, radix angelicae, jasmine, spenceria ramalana, rhizoma sparganii, curcuma zedoary, rhizoma corydalis and kapur. The compatibility law of 31 traditional Chinese medicines in the formula is based on the basic theory of the traditional Chinese medicine; the formula focuses on the pathogeny and mechanism in the traditional Chinese medicine for supraspinatus tendonitis caused by wind-cold-damp retention; according to the composition, the treatment on primary symptoms is considered; the accompanied symptoms and change symptoms are simultaneously taken into consideration; the concentration of the medicine is relatively high; the treatment operation is simple and convenient; the portability is relatively high and is not limited by appliances; one medicine is applied to one patient, so that the external traditional Chinese medicine preparation is relatively safe; the harms in the treatment process are controllable; and the external traditional Chinese medicine preparation has a wide prospect.