The invention belongs to the field of traditional Chinese medicines, and discloses an emulsifiable paste for treating plasmacellular mastitis and a preparation method thereof. The emulsifiable paste is prepared from the following raw materials: radix lamiophlomidis rotatae, rhodiola rosea, craibindendron, arachniodes speciosa, lignum dalbergiae odoriferae, garden balsam seeds, cortex ilicis rotundae, papilionaceae christia obcordata, cryptotaenia japonica, towel gourd, Chinese prickly ash, Chinese arborvitae resin, tendrilleaf solomonseal rhizome, quisqualis indica, radix helicteris, squama manitis, alysicarpus vaginalis, betel pepper leaves, calendula officinalis, halloysitum rubrum, fructus kochiae, goose-axunge, oleum camelliae, blue chamomile essential oil, medical stone, laurocapram, squalane, bee propolis, menthol, olive oil and the like. The emulsifiable paste provided by the invention shows good affinity and permeability with skin, the drugs can quickly penetrate through the skin barrier, so that the local or whole body plasma drug concentration can be improved, and drug absorption and function exertion can be promoted; besides, the drugs can directly act on the breasts to focus on the diseased part, and can further supplement each other in the curative effect and mutually gain from each other, therefore the prepared emulsifiable paste has the effects of promoting blood circulation to remove blood stasis, namely enabling the blood to circulate in vessels, as well as clearing heat for detumescence, sterilizing, detoxifying, removing slough, promoting growth of tissue, relieving sensitivity and moisturizing, and being capable of effectively treating plasmacellular mastitis.