A plaster for treating lumbar intervertebral disc protrusion, hyperosteogeny and rheumatoid diseases is provided. The plaster contains a base drug prepared from four groups of drugs and a dusted powder drug. The base drug is prepared from rosin and mung bean; sesame oil, angelica, cochinchina momordica seed, common anemarrhena, dahurian angelica root, croton, hard clam, indian iphigenia bulb, corymbose knoxia and teasel root; frankincense, myrrh, dragon's blood, catechu, calomel, verdigris, realgar, salammoniac, arsenic trioxide, gamboge, natural indigo, mercuric oxide, calcined plaster, camphor, kansui root and borneol; and castor seed, almond, hydnocapus seed, cochinchina momordica seed and croton. The dusted powder drug is prepared from ephedra root, Chinese wild ginger, cinnamon, honey locust, raw pinellia tuber, cloven, raw arisaema and borneol. The plaster has the advantages of precise and scientifi formulation, wide raw material source, simple process, low cost, good skin permeation for the affected part, good therapeutic effect, short treatment period and quick effect, and is used for treating lumbar intervertebral disc protrusion, hyperosteogeny and rheumatoid diseases with a cure rate of 63% or higher and a total effective rate of 96% or higher.