The invention discloses a pharmaceutical composition for treating rheumatic arthralgia and a preparation method thereof. The pharmaceutical composition adopts garden balsam stem, common monkshood mother root and garter snake for dispelling pathogenic wind, removing dampness, warming channels, dispelling cold and relieving pain; adopts cuttlebone and leech for invigorating pulse, removing stasis, activating collaterals and dredging meridian passage; and adopts clematis root, obscured homalomena rhizome and natural copper for strengthening tendons and bones, removing dampness, dredging channels and relieving pain, thereby having the effects of dispelling pathogenic wind, removing dampness, warming channels, dispelling cold, promoting blood circulation, removing blood stasis, strengthening tendons and bones, dredging channels, relieving pain and the like for treating arthritis, cervical spondylosis, intervertebral disc herniation, neuropathic pain, bone hyperplasia and the like.