The invention discloses a medicament composition for treating rheumatism and rheumatoid arthritis and a preparation method thereof. The medicament composition comprises 16 drugs such as scorpion, angelica, hoantchy root, chilopod, nuxvomica poison nut seed, stiff silkworm, achyranthis root, parsnip, aconite, etc. The medicament composition can be added into pharmaceutically conventional auxiliary materials by a conventional process to be prepared into clinically acceptable dosage form. The medicament composition has the efficacy of expelling wind and damp and dissipating cold, relaxing tendons and activating collaterals, stabilizing blood pressure, resolving hard lump and stopping pain, tonifying qi and blood as well as Yi and Yang, promoting circulation of liver, spleen and kidney veins, activating blood and dissolving stasis, and reducing swellings. For treating rheumatism and rheumatoid arthritis, arthroncus, motion stiffness, varix, deformation, vasculitis, kidney deficiency and pain in waist and lower extremities, deadlimb, cervical spondylosis, scapulohumeral periarthritis, lumbar interveterbral disc protrusion, sciatic neuralgia, bone spur, hyperosteogeny, and various pains caused by female puerperal wind-invading, the medicament composition has remarkable curative effect, and has no side effects.